99446. National Research Council.   Groundwater Contamination.   National Academy Press, 1684, Studies in Geophysics, 179 pages with illustrations.   Softbound, minor shelf wear, text in very good condition.    $8.00

106372. Brooks, W. K. and Grave, C.   Ophiura Brevispina.   National Academy of Sciences, 1899, Memoirs of the National Academy of Sciences, Volume 8, Part 4 : pages 83-100 with 3 plates.   Softbound, minor signs of use and age, good plus or better condition.   Original publication, not a modern reprint.   $17.00

19296. Dall, W. H.   Biographical Memoir of William More Gabb 1839-1878.   National Academy of Science, 1909, Biographical Memoirs, 6 : 347-361, 1 photo figure.   Printed wraps, previous owner marks on front wrap, usual signs of use and age discoloration, text in very good condition.    $13.00

67082. Babcock, E. B. and Collins, J. L.   Interspecific Hybrids in Crepis.   The National Academy of Sciences, 1920, Proceedings of the National Academy of Sciences, Volume 6, Number 11 : pages 670-673.   Reprint, previous owners book stamp, minor signs of use and age, text in very good condition.    $5.00

7188. Osborn, H. F.   The Origin and Evolution of Life, on the Theory of Action, Reaction, and Interaction of Energy.   National Academy of Sciences, 1921, Hale Lectures, 322 pages, 136 figures.   Cloth bound, normal signs of wear and age, minor previous owner marks, binding strating, text in very good condition.    $38.00

67770. Setchell, W. A. et al.   A Preliminary Note on the Results of Crossing Certain Varieties of Nicotiana Tabacum.   National Academy of Sciences, 1921, Proceedings of the National Academy of Sciences, Volume 7, Number 2 : Pages 50-56.   Printed wraps, previous owners book stamp, minor signs of use and age, text in very good condition.    $5.00

20703. Clarke, F. W. and Washington, H. S.   The Average Chemical Composition of Igneous Rocks.   National Academy of Sciences, 1922, Proceedings, 8 (5) : 108-115.   Printed wraps, minor moisture stain along edge that does not impact text, signs of use and age discoloration, text in good plus or better condition.    $4.00

67324. Huestis, R. R.   Heredity of Microscopic Hair Characters in Peromyscus.   The National Academy of Sciences, 1923, Proceedings of the National Academy of Sciences, Volume 9, Number 10 : pages 352-355 with 1 table.   Printed wraps, previous owners book stamp, minor signs of use and age, text in very good condition.    $3.00

67772. Setchell, W. A.   Ruppia and its Environmental Factors.   National Academy of Sciences, 1924, Proceedings of the National Academy of Sciences, Volume 10, Number 6 : pages 286-288.   Printed wraps, previous owners book stamp, minor signs of use and age, text in very good condition.    $4.00

67739. Sax, K.   The Nature of Size Inheritance.   National Academy of Sciences, 1924, Proceedings of the National Academy of Sciences, Volume 10, Number 6 : pages 224-227.   Printed wraps, previous owners book stamp, usual signs of use and age, text in very good condition.    $3.00

67498. Metz, C. W.   Genetic Evidence of a Selective Segregation of Chromosomes in Sciara (Diptera).   The National Academy of Sciences, 1926, Proceedings of the National Academy of Sciences, Volume 12, Number 12 : pages 690-692.   Reprint, previous owners book stamp, minor signs of use and age, text in very good condition.    $2.00

67501. Moses, M. S. and Metz, C. W.   Evidence That the Female Is Responsible for the Sex Ratio in Sciara (Diptera) and Observations On Sex-Ratio Determination in Sciara..   The National Academy of Sciences, 1928, Proceedings of the National Academy of Sciences, Volume 14, Number 12 : pages 928-932 with 1 figures.   Printed wraps, minor signs of use and age, very good condition.    $5.00

67497. Metz, C. W.   Selective Segregation of Chromosomes in Males of a Third Species of Sciara.   The National Academy of Sciences, 1929, Proceedings of the National Academy of Sciences, Volume 15, Number 5 : pages 339-343 with 2 tables.   Reprint, previous owners book stamp, minor signs of use and age, text in very good condition.    $4.00

67499. Metz, C. W.   Genetic Identification of the Sex Chromosomes in Sciara (Diptera).   The National Academy of Sciences, 1929, Proceedings of the National Academy of Sciences, Volume 15, Number 2 : pages 82-85.   Printed wraps, very good condition.    $4.00

14232. Washington, H. S.   The Rocks Suites of the Pacific and the Atlantic Basins.   National Academy of Sciences, 1929, Proceedings, 15 (7) : 604-609.   Printed wraps, A. H. Koschman signature on front wrap, usual signs of use and age, text in very good condition.    $4.00

67383. Johansen, D. A.   Proposed Phylogeny of the Onagraceae Based Primarily on Number of Chromosomes.   The National Academy of Science, Vol. 15, No. 12, pp 882-885, no wraps, some marginal notes, VG, blind stamp., 1929, Proceedings of the National Academy of Science, Volume 15, Number 12 : pages 882-885.   Reprint, previous owners book stamp, minor signs of use and age, text in very good condition.    $2.00

38119. Stock, C.   An Upper Oligocene Mammalian Fauna from Southern California.   National Academy of Science, 1932, Proceedings of the National Academy of Science, 18 (8) : 550-554, 2 figures.   Printed wraps, previous owners books stamp, other minor signs of use and age, very good condition.    $5.00

1562. Stock, C.   Eocene Land Mammals on the Pacific Coast.   National Academy of Science, 1932, Proceedings, 18 (07) : 518-523, 4 figures.   Printed wraps, previous owner marks including J. R. Macdonald book stamp, minor edge wear, text in very good condition.    $4.00

1568. Stock, C.   A Miacid from the Sespe Upper Eocene, California.   National Academy of Science, 1933, Proceedings, 19 (05) : 481-486, 1 plate.   Printed wraps, previous owner marks, minor edge wear and stain, text in very good condition.    $3.00

1571. Stock, C.   An Amynodont Skull from the Sespe Deposits, California.   National Academy of Science, 1933, Proceedings, 19 (08) : 762-767, 1 figure.   Printed wraps, previous owner marks including Craig C. Black signature, minor edge wear, text in very good condition.    $4.00

1573. Stock, C.   An Eocene Primate from California.   National Academy of Science, 1933, Proceedings, 19 (11) : 954-959, 1 plate.   Printed wraps, previous owner marks including Craig C. Black signature, minor edge wear, text in very good condition.    $4.00

1567. Stock, C.   Hyaenodontidae of the Upper Eocene of California.   National Academy of Science, 1933, Proceedings, 19 (04) : 434-440, 2 figures, 1 plate.   Printed wraps, small hole punches along spine that does not impact text, minor age and wear signs, text in very good condition.    $6.00

111177. Cloos, E.   Structure of the "Ellicott City Granite," Maryland.   National Academy of Sciences, 1933, Proceedings of the National Academy of Sciences, Volume 19, Number 1 : pages 130-138 with 6 figures and 1 map.   Softbound, minor signs of use, good plus or better condition.    $8.00

1582. Stock, C.   A Hypertragulid from the Sespe Uppermost Eocene, California.   National Academy of Science, 1934, Proceedings, 20 (12) : 625-629, 1 plate.   Printed wraps, small hole punches along spine that does not impact text, minor age and wear signs, text in very good condition.    $5.00

1575. Stock, C.   A Second Eocene Primate from California.   National Academy of Science, 1934, Proceedings, 20 (03) : 150-154, 1 plate.   Printed wraps, previous owner marks including Craig C. Black signature, minor edge wear, text in very good condition.    $4.00

1578. Stock, C.   New Creodonta from the Sespe Upper Eocene, California.   National Academy of Science, 1934, Proceedings, 20 (07) : 423-427, 1 plate.   Printed wraps, previous owner marks including Craig C. Black signature, minor edge wear, text in very good condition.    $4.00

1580. Stock, C.   On the Occurrence of an Oreodont Skeleton in the Sespe of South Mountain, California.   National Academy of Science, 1934, Proceedings, 20 (09) : 518-523, 2 figures, 2 plates.   Printed wraps, previous owner marks including Craig C. Black signature, minor edge wear, text in very good condition.    $4.00

14233. Decker, C. E.   The Graptolites of the Simpson Group of Oklahoma.   National Academy of Sciences, 1935, Proceedings, 21 (5) : 239-243, 1 plate.   Off-print, signed by the author and Vaughn W. Russon, usual signs of use and age, text in very good condition.    $4.00

1590. Stock, C.   Titanothere Remains from the Sespe of California.   National Academy of Science, 1935, Proceedings, 21 (07) : 456-462, 2 plates.   Printed wraps, previous owner marks including Krishtalka signature, minor edge wear, text in very good condition.    $6.00

1587. Stock, C.   Insectivora from the Sespe Uppermost Eocene, California.   National Academy of Science, 1935, Proceedings, 21 (04) : 214-219, 1 plate.   Printed wraps, previous owner marks including Craig C. Black signature, minor edge wear, text in very good condition.    $4.00

1586. Stock, C.   Simmys, A New Name to Replace Eumysops Wilson, Preoccupied. - A Correction.   National Academy of Science, 1935, Proceedings, 21 (03) : 179-180.   Minor edge wear, text in very good condition.    $1.00

1583. Stock, C.   Cricetine-Like Rodents from the Sespe Eocene of California.   National Academy of Science, 1935, Proceedings, 21 (01) : 26-32, 1 figures.   Printed wraps, previous owner marks including Craig C. Black book stamp, minor edge wear, text in very good condition.    $4.00

1597. Stock, C.   Perissodactyla of the Sespe Eocene, California.   National Academy of Science, 1936, Proceedings, 22 (05) : 260-265, 2 plates.   Printed wraps, previous owner marks including Craig C. Black signature, minor edge wear, a little damp stain along one corner, text in very good condition.    $4.00

1596. Stock, C.   Hesperomeryx, A New Artiodactyla from the Sespe Eocene, California.   National Academy of Science, 1936, Proceedings, 22 (03) : 177-182, 1 plates.   Printed wraps, small hole punches along spine that does not impact text, minor age and wear signs, text in very good condition.    $6.00

1602. Stock, C.   An Eocene Titanothere from San Diego County, California, with Remarks on the Age of the Poway Conglomerate.   National Academy of Science, 1937, Proceedings, 23 (02) : 48-53, 1 plate.   Printed wraps, small hole punches along spine that does not impact text, minor age and wear signs, text in very good condition.    $5.00

20704. Field, R. M.   Structure of Continents and Ocean Basins.   National Academy of Sciences, 1937, Proceedings, 27 (5) : 181-195.   Printed wraps, signs of use and age discoloration, very good condition.    $6.00

11397. Stock, C.   A Tarsiid Primate and a Mixodectid from the Poway Eocene, California.   National Academy of Science, 1938, Proceedings, 24 (07) : 288-293, 1 plate.   Printed wraps, usual signs of use and age, text in very good condition.    $5.00

1607. Stock, C.   A Titanothere from the Type Sespe of California.   National Academy of Science, 1938, Proceedings, 24 (11) : 507-512, 1 figure, 2 plates.   Printed wraps, small hole punches along spine that does not impact text, minor age and wear signs, text in very good condition.    $5.00

1608. Stock, C.   Eocene Amynodonts from Southern California.   National Academy of Science, 1939, Proceedings, 25 (06) : 270-275, 1 figure, 2 plates.   Printed wraps, previous owner marks including Craig C. Black signature, minor edge wear, text in very good condition.    $4.00

14234. Bowen, N. L.   Certain Singular Points on Crystallization Curves of Solid Solutions.   National Academy of Sciences, 1941, Proceedings, 27 (6) : 301-309, 9 figures.   Printed wraps, minor signs of use and age, text in very good condition.    $7.00

119505. AGU.   Transactions of the American Geophysical Union. Papers on Meteorology, Hydrology, Oceanography, Seismology, Volcanology, Magnetism, Geodesy, and Tectonophysics. Volume 28, Numbers 1-6.   The National Research Council of the National Academy of Sciences, Washington, D. C., 1947, Transactions of the American Geophysical Union, Volume 28, Numbers 1 -6.   Softbound, minor signs of use, very good condition.   Original publication, not a modern reprint.   $42.00

118710. AGU.   Transactions of the American Geophysical Union. Papers on Meteorology, Hydrology, Oceanography, Seismology, Volcanology, Magnetism, Geodesy, and Tectonophysics. Volume 28, Number 1.   The National Research Council of the National Academy of Sciences, Washington, D. C., 1947, Transactions of the American Geophysical Union, Volume 28, Number 1 .   Softbound, minor signs of use, very good condition.   Original publication, not a modern reprint.   $8.00

118712. AGU.   Transactions of the American Geophysical Union. Papers on Meteorology, Hydrology, Oceanography, Seismology, Volcanology, Magnetism, Geodesy, and Tectonophysics. Volume 28, Number 2.   The National Research Council of the National Academy of Sciences, Washington, D. C., 1947, Transactions of the American Geophysical Union, Volume 28, Number 2.   Softbound, minor signs of use, very good condition.   Original publication, not a modern reprint.   $8.00

118713. AGU.   Transactions of the American Geophysical Union. Papers on Meteorology, Hydrology, Oceanography, Seismology, Volcanology, Magnetism, Geodesy, and Tectonophysics. Volume 28, Number 3.   The National Research Council of the National Academy of Sciences, Washington, D. C., 1947, Transactions of the American Geophysical Union, Volume 28, Number 3.   Softbound, minor signs of use, very good condition.   Original publication, not a modern reprint.   $8.00

118714. AGU.   Transactions of the American Geophysical Union. Papers on Meteorology, Hydrology, Oceanography, Seismology, Volcanology, Magnetism, Geodesy, and Tectonophysics. Volume 28, Number 4.   The National Research Council of the National Academy of Sciences, Washington, D. C., 1947, Transactions of the American Geophysical Union, Volume 28, Number 4.   Softbound, minor signs of use, very good condition.   Original publication, not a modern reprint.   $8.00

118715. AGU.   Transactions of the American Geophysical Union. Papers on Meteorology, Hydrology, Oceanography, Seismology, Volcanology, Magnetism, Geodesy, and Tectonophysics. Volume 28, Number 5.   The National Research Council of the National Academy of Sciences, Washington, D. C., 1947, Transactions of the American Geophysical Union, Volume 28, Number 5.   Softbound, minor signs of use, very good condition.   Original publication, not a modern reprint.   $8.00

118716. AGU.   Transactions of the American Geophysical Union. Papers on Meteorology, Hydrology, Oceanography, Seismology, Volcanology, Magnetism, Geodesy, and Tectonophysics. Volume 28, Number 6.   The National Research Council of the National Academy of Sciences, Washington, D. C., 1947, Transactions of the American Geophysical Union, Volume 28, Number 6.   Softbound, minor signs of use, very good condition.   Original publication, not a modern reprint.   $8.00

118729. AGU.   Transactions of the American Geophysical Union. Papers on Meteorology, Hydrology, Oceanography, Seismology, Volcanology, Magnetism, Geodesy, and Tectonophysics. Volume 29, Numbers 1.   The National Research Council of the National Academy of Sciences, Washington, D. C., 1948, Transactions of the American Geophysical Union, Volume 29, Numbers 2.   Softbound, minor signs of use, very good condition.   Original publication, not a modern reprint.   $8.00

118728. AGU.   Transactions of the American Geophysical Union. Papers on Meteorology, Hydrology, Oceanography, Seismology, Volcanology, Magnetism, Geodesy, and Tectonophysics. Volume 29, Numbers 1.   The National Research Council of the National Academy of Sciences, Washington, D. C., 1948, Transactions of the American Geophysical Union, Volume 29, Numbers 1.   Softbound, minor signs of use, very good condition.   Original publication, not a modern reprint.   $8.00

118727. AGU.   Transactions of the American Geophysical Union. Papers on Meteorology, Hydrology, Oceanography, Seismology, Volcanology, Magnetism, Geodesy, and Tectonophysics. Volume 29, Numbers 1-6.   The National Research Council of the National Academy of Sciences, Washington, D. C., 1948, Transactions of the American Geophysical Union, Volume 29, Numbers 1 -6.   Softbound, minor signs of use, very good condition.   Original publication, not a modern reprint.   $42.00