19310. Dall, W. H.   Results of the Branner-Agassiz Expedition to Brazil. V. Mollusks from the Vicinity of Pernambuco.   Washington Academy of Sciences, 1901, Proceedings, 3 : 139-147.   Printed wraps, minor signs of use and age discoloration, text in very good condition.    $7.00

67086. Greene, E. L.   A Study of Rhus Glabra.   Washington Academy of Sciences, 1906, Proceedings of the Washington Academy of Sciences, Volume 8 : pages 167-196.   Printed wraps, previous owners book stamp, minor signs of use and age, text in very good condition.    $15.00

67823. Standley, P. C.   A New Genus of Chenopodiaceae from Arizona.   Washington Academy of Sciences, 1915, Journal of the Washington Academy of Sciences, Volume 5, Number 2 : pages 57-59.   Printed wraps, previous owners book stamp, minor signs of use and age, text in very good condition.    $4.00

67821. Standley, P. C.   Botany. - The North American Tribes and Genera of Amaranthaceae.   Washington Academy of Sciences, 1915, Journal of the Washington Academy of Sciences, Volume 5, Number 11 : pages 391-396.   Reprint, previous owners book stamp, minor signs of use and age, text in very good condition.    $4.00

67820. Standley, P. C.   The Application of the Generic Name Achyranthes.   Washington Academy of Sciences, 1915, Journal of the Washington Academy of Sciences, Volume 5, Number 3 : pages 72-76.   Printed wraps, previous owners book stamp, minor signs of use and age, text in very good condition.    $4.00

67306. Hitchcock, A. S.   Taxonomic Botany and the Washington Botanist.   The Washington Academy of Sciences, 1917, Journal of the Washington Academy of Sciences, Volume 7, Number 9 : pages 251-263.   Printed wraps, previous owners book stamp, minor signs of use and age, text in very good condition.    $8.00

66971. Blake, S. F.   A Pleiminary Revision of the North American and West Indian avocados (Persea spp.).   The Washington Academy of Sciences, 1919, Journal of the Washington Academy of Sciences, Volume 10, Number 1 : pages 9-21 with 2 figures.   Reprint, previous owners stamp, minor signs of use and age, text in very good condition.    $5.00

66970. Blake, S. F.   The Anay, a New Edible-Fruited Relative of the Avocado; and A preliminary revision of the North American and West Indian Avocados (Persea spp).   The Washington Academy of Sciences, 1919, Journal of the Washington Academy of Sciences, Volume 9, Number 16 : pages 457-462 with 1 figure.   Printed wraps, previous owners book stamp, other minor signs of use and age, text in very good condition.    $5.00

66972. Blake, S. F.   Revision of True Mahoganies.   The Washington Academy of Sciences, 1920, Journal of the Washington Academy of Sciences, Volume 10, Number 10 : pages 286-297 with 2 figures.   Reprint, previous owners stamp, minor signs of use and age, text in very good condition.    $5.00

67827. Standley, P. C.   Botany. - Fourteen New Species from Hispaniola.   The Washington Academy of Sciences, 1927, Journal of the Washington Academy of Sciences, Volume 17, Number 3 : pages 65-73 with 2 figures.   Reprint, previous owners book stamp, usual signs of use and age, text in good or better condition.    $5.00

66973. Coulter, J. M. and Rose, J. N.   Revision of the genus Myrrhidendron.   Washington Academy of Sciences, 1927, Journal of the Washington Academy of Sciences, Volume 17, Number 9 : 213-215.   Reprint, previous owners book stamp, minor signs of use and age, text in very good condition.    $2.00

14844. Hay, O. P.   On Some Recent Excursions into Pleistocene Geology and Paleontology.   The Washington Academy of Sciences, 1928, Journal, 19 (21) : 463-469.   Off-print, previous owner marks on front page including Hay Book Stamp as well as J. LeRoy Kay signature, signs of use and age, text in fair condition.    $5.00

19306. Journal of the Washington Academy of Sciences.   Journal of the Washington Academy of Sciences.   Washington Academy of Sciences, 1952, Journal, 42 (4) : 105-136, with multiple illustrations.   Printed wraps, usual signs of use and age discoloration, text in very good condition.    $6.00

19302. Thoiry, A. C.   Nomenclatural Notes on Carditids and Lucinids .   Washington Academy of Sciences, 1952, Journal, 42 (4) : 116-122.   Printed wraps, usual signs of use and age discoloration, text in very good condition.    $4.50

19308. Vokes, H. E.   Paleontology: Some Primitive Fossil Pelecypods and Their Possible Significance.   Washington Academy of Sciences, 1954, Journal, 44 (8) : 233-236, 1 figure.   Printed wraps, usual signs of use and age discoloration, text in very good condition.    $3.00

19304. Nicol, D.   Geology: Taxonomy Verses Stratigraphy.   Washington Academy of Sciences, 1958, Journal, 48 (4) : 113-114.   Printed wraps, usual signs of use and age discoloration, text in very good condition.    $2.50

39997. Wilson, J. A.   Darwinian natural selection and vertebrate paleontology.   Washington Academy of Sciences, 1959, Journal of the Washington Academy of Sciences, 49 (7) : 231-233.   Reprint, text, good condition.    $1.00