93604. Thomson, W.   XXI. On the Echinoidea of the 'Porcupine' Deep-sea Dredging-Expeditions.   Royal Society of London, 1874, Transactions of the Royal Society of London, Volume 164, Part 2 : pages 719-756 with 13 lithographed plates.   Hardbound, inscribed by the author, minor foxing, good plus or better condition.    $250.00

99677. Gregory, J. W.   The Geological History of the Pacific Ocean. An Address to the Geological Society of London at its Anniversary Meeting on the Twenty-First of February, 1930.   The Geological Society of London, 1930, Quarterly Journal of the Geological Society of London, Volume 86, Number 2 : pages 72-136 with 4 figures.   Softbound, very good condition.    $22.00

99710. Baker, F. C.   The Classification of the Large Planorboid Snails of Europe and America.   The Zoological Society of Longon, 1931, Proceedings of the Zoological Society of London, Part 2 : pages 575-592 with 6 plates.   Softbound, good or better condition.    $38.00

99778. Hobby, B. M.   The Epigamic Behavior of the Male Empis opaca, F. (Dipt., Empidae). The Relationship between Courtship and Predacious Habits in Diocrria rufipes, De G., and D. atricapilla, Mg. (Dipt., Asilidae).   The Entomological Society of London, 1932, Proceedings of the Entomologocal Society of London, Volume 6, Part 3 : pages 66-67 and 74-75.   Softbound, previous owners stamp, good condition.    $2.00

99784. Bloomer, H. H.   On the Sex, and Sex-modification of the Gill, of Anodonta cygnea.   The Malacological Society of London, 1934, Proceedings of the Malacological Society of London, Volume 21, Part 1 : pages 21-28 with 1 plate.   Softbound, previous owners stamps, good plus condition.    $5.00

66560. Hawkins, H. L.   The Lantern and Girdle of Some Recent and Fossil Echinoidea.   Royal Society of London, 1934, Philosophical Transactions of The Royal Society of London, Series B, Volume 223 : pages 617-649 with 3 plates.   Printed wraps chipped, previous owners book stamp, usual signs of use, text and plates in good or better condition.    $38.00

99785. Bloomer, H. H.   A Further Note on the Sex of Anodonta cygnea L..   The Malacological Society of London, 1935, Proceedings of the Malacological Society of London, Volume 21, Part 5 : pages 304-321 with 1 table and 1 graph.   Softbound, previous owners stamp, good plus condition.    $5.00

99786. Bloomer, H. H.   A note on the sex of Pseudanodonta Bourguignat and Anodonta Lamarck.   The Malacological Society of London, 1939, Proceedings of the Malacological Society of London, Volume 23, Part 5 : pages 285-297 with 1 table and 1 graph.   Softbound, previous owners stamp, good plus condition.    $5.00

99787. Davies, A. M.   Some Palaeontological Problems.   The Malacological Society of London, 1939, Proceedings of the Malacological Society of London, Volume 23, Part 6 : pages 336-344 with 26 figures.   Softbound, previous owners stamp, good plus condition.    $5.00

99788. Bloomer, H. H.   Experiments of Self-fertilization in Anodonta cygnea (L.).   The Malacological Society of London, 1940, Proceedings of the Malacological Society of London, Volume 24, Part 3 : pages 113-121 with 2 tables.   Softbound, previous owners stamps, good plus condition.    $5.00

99712. Westoll, T. S.   The Permian Fishes Dorypterus and Lekanichthys.   The Zoological Society of Longon, 1941, Proceedings of the Zoological Society of London, Series B, Volume 111 : pages 39-58 with 5 figures.   Softbound, stapled text, good plus condition.    $8.00

99789. Bloomer, H. H.   The Seasonal Production of Spermatozoa and other Noates on the Biology of Anodonta cygnea (L.).   The Malacological Society of London, 1946, Proceedings of the Malacological Society of London, Volume 27, Part 2 : pages 62-68 with 1 table.   Softbound, stapled text, previous owners stamps, good condition.    $3.00

99790. Schlesch, H.   The Pisidia of the Tovelde Klint.   The Malacological Society of London, 1947, Proceedings of the Malacological Society of London, Volume 27, Part 4 : pages 137-140 with 10 figures.   Softbound, previous owners label, good plus condition.    $3.00

99713. Morrison-Scott, T. C. and Bishop, A. H.   The Coat Colour of the Grey Squirrel (Sciurus carolinensis) with Other Notes.   The Zoological Society of Longon, 1952, Proceedings of the Zoological Society of London, Volume 121, Part 4 : pages 773-775 with 3 color plates.   Softbound, usual signs of use, a few marks below plates, good condition.    $5.00

99679. Lees, G. M.   Forland Folding. Anniversary Address Delivered at the Annual General Meeting of the Geological Society of London on the 30 April, 1952.   The Geological Society of London, 1952, Quarterly Journal of the Geological Society of London, Volume 108, Number 1 : pages 1-34 with 21 figures and 4 plates.   Softbound, inscribed by the author, good plus condition.    $15.00

99680. Vincent, E. A.   Hornblende-Lamprophyre Dykes of Basaltic Parentage from the Skaergaard Area, East Greenland.   The Geological Society of London, 1953, Quarterly Journal of the Geological Society of London, Volume 109, Part 1 : pages 21-50 with 3 figures, 4 tables and 1 plate.   Softbound, very good condition.    $11.00

99723. Bagnold, R. A.   Experiments on a gravity-free dispersion of large solid spheres in a Newtonian fluid under shear.   Royal Society of London, 1954, Proceedings of the Royal Society of London, Series A, Volume 225 : pages 49-63 with 8 figures.   Softbound, stapled text, good plus condition.    $4.00

93608. Bagnold, R. A.   The Flow of Cohesionless Grains in Fluids.   Royal Society of London, 1956, Philosophical Transactions of The Royal Society of London, Series A. Mathematical and Physical Sciences, Volume 249, Number 964 : pages 235-297 with 22 figures.   Softbound, previous owners name, minor signs of use, text in very good condition.    $38.00

99697. Marcus, E.   On Opisthobranchia from Brazil (2).   Linnean Society of London, 1957, Journal of the Linnean Society of London (Zoology), Volume 43, Number 292 : pages 390-486 with 246 pages.   Softbound, homemade wraps, first page reproduced, remaining original text in good or better condition.    $34.00

99683. Robson, D. A.   The Geological Structure of the Wadi el Dirba Area of Sinai.   The Geological Society of London, 1959, Quarterly Journal of the Geological Society of London, Volume 115, Part 1 : pages 41-48 with 2 figures.   Softbound, very good condition.    $5.00

99682. Wood, A. and Smith, A. J.   The Sedimentation and Seimentary History of the Aberystwyth Grits (Upper Llandoverian).   The Geological Society of London, 1959, Quarterly Journal of the Geological Society of London, Volume 114, Part 2 : pages 163-195 with 10 figures and 3 plates.   Softbound, xlib, good condition.    $11.00

68043. Wilkins, D. A.   Recognizing Adaptive Variants.   The Linnean Society of London, 1960, Proceedings of the Linnean Society of London, Symposium of Experimental Taxonomy of Vascular Plants, Number 171, Part 1 : pages 122-126.   Reprint, usual signs of use and age, text in very good condition.    $3.00

99684. Kelling, G.   The Stratigraphy and Structure of the Ordovician Rocks of the Rhinns of Galloway.   The Geological Society of London, 1961, Quarterly Journal of the Geological Society of London, Volume 117, Part 1 : pages 37-75 with 12 figures and 1 plate.   Softbound, very good condition.    $11.00

99724. Bagnold, R. A.   Auto-suspension of transported sediment; turbidity currents.   Royal Society of London, 1962, Proceedings of the Royal Society of London, Series A, Volume 265 : pages 315-319 with 1 figure.   Softbound, stapled text, good plus condition.    $3.00

99793. McLean, J. H.   Feeding Behaviour of the Chiton Placiphorella.   The Malacological Society of London, 1962, Proceedings of the Malacological Society of London, Volume 35, Part 1 : pages 23-26 with 2 figures.   Softbound, very good condition.    $2.00

99794. Dell, R. K. and Dance, S. P.   The Molluscan Genus Ranella and the Distribution of Ranella Olearium (Linnaeus).   The Malacological Society of London, 1962, Proceedings of the Malacological Society of London, Volume 35, Part 4 : pages 159-168 with 2 plates.   Softbound, stapled text, good plus condition.    $3.00

95154. Watson, M. S.   The Evolution of The Labyrinthodonts.   The Royal Society of London, England, 1962, Philosophical Transactions of the Roy Society of London, Series B. Biological Sciences, Number 723, Volume 246 : pages 219-265 with 13 figures.   Softbound, signs of use and age, good condition.   Original publication, not a modern copy.   $52.00

99699. Kohn, A. J.   Type Specimens and Identity of the Described Species of Conus. II. The Species Described by Solander, Chemnitz, Born and Lightfoot between 1766 and 1786.   Linnean Society of London, 1963, Journal of the Linnean Society of London (Zoology), Volume 45, Number 304 : pages 151-167 with 2 plates.   Softbound, stapled text, very good condition.    $19.00

99714. Rigby, J. E.   Alimentary and Reproductive Systems of Oxychilus cellarius (Muller) (Stylommatophora).   The Zoological Society of Longon, 1963, Proceedings of the Zoological Society of London, Volume 141, Part 2 : pages 311-359 with 18 figures.   Softbound, inscribed by the author, minor signs of use, text in very good condition.    $38.00

99795. Burch, J. Q. and Campbell, G. B.   A New Genus for a Deep-Water Californian Naticid.   The Malacological Society of London, 1963, Proceedings of the Malacological Society of London, Volume 35, Part 5 : pages 221-223 with 3 figures and 1 plate.   Softbound, stapled text, good plus condition.    $3.00

99725. Lyttleton, R. A.   A comentary mechanism for the formation of tektites.   Royal Society of London, 1963, Proceedings of the Royal Society of London, Series A, Volume 272 : pages 467-480 with 2 figures.   Softbound, stapled text, good plus condition.    $5.00

99698. Kohn, A. J.   Type Specimens and Identity of the Described Species of Conus. I. The Species Described by Linnaeus, 1758-1767.   Linnean Society of London, 1963, Journal of the Linnean Society of London (Zoology), Volume 44, Number 302 : pages 740-768 with 4 plates.   Softbound, stapled text, good plus condition.    $19.00

65336. Walker, G. P.   The Breiddalur central volcano, eastern Iceland.   Geological Society of London, 1963, Quarterly Journal of the Geological Society of London, Volume 119 : pages 29-63 with 12 figures and 4 plates.   Text extracted from a larger volume, minor signs of use, very good condition.    $14.00

37298. Geological Society of London.   The Quarterly Journal of the Geological Society of London : Contains articles on Paleozoic Plankton, Seamounts off Iberian Coast, columnar Buchites at Apsley, Tasmania.   Geological Society of London, 1964, The Quarterly Journal of the Geological Society of London, 120 (4) No. 480 : 455-559.   Printed wraps, minor signs of use and age, very good condition.    $9.00

77332. Harland, W. B. et al.   The Phanerozoic Time-scale.   Geological Society of London, 1964, The Quarterly Journal of the Geological Society of London, Supplement, Volume 120 s : 458 pages with illustrations.   Hardbound with good plus dust jacket, previous owners name, minor signs of use, very good condition.   Special Publication Number 5.   $37.00

99686. Lambert, R. S.   The Relationship Between Radiometric Ages Obtained from Plutonic Complexes and Stratigraphical Time.   The Geological Society of London, 1964, Quarterly Journal of the Geological Society of London, Volume 120 s : pages 43-54.   Softbound, very good condition.    $5.00

99685. Brown, P. E.   The Songwe scarp carbonatite and associated feldspathization in the Mbeya Range, Tanganyika.   The Geological Society of London, 1964, Quarterly Journal of the Geological Society of London, Volume 120 : pages 223-240 with 2 figures, 4 figures and 2 plates.   Softbound, very good condition.    $8.00

65334. Saggerson, E. P. and Baker, B. H.   Post-Jurassic erosion-surfaces in eastern Kenya and their deformation in relation to rift structure.   Geological Society of London, 1965, Quarterly Journal of the Geological Society of London, Volume 121 : pages 51-72 with 4 figures and 1 plate.   Text extracted from a larger volume, minor signs of use, very good condition.    $8.00

54016. Jewell, P. A. and Liozos, C.   Play, Exploration and Territory in Mammals.   Academic Press, 1966, Symposium of the Zoological Society of London, Number 18 : pages 1-280.   Hardbound, xlib with usual signs, text in very good condition.    $11.00

99687. Belousov, V. V.   Modern concepts of the structure and development of the Earth's crust and upper mantle of continents.   The Geological Society of London, 1966, Quarterly Journal of the Geological Society of London, Volume 122 : pages 293-314 with 5 figures.   Softbound, very good condition.    $8.00

99700. Kohn, A. J.   Type Specimens and Identity of the Described Species of Conus. III. The Species Described by Gmelin and Blumenbach in 1791.   Linnean Society of London, 1966, Journal of the Linnean Society of London (Zoology), Volume 46, Number 308 : pages 73-103 with 3 plates.   Softbound, stapled text, very good condition.    $19.00

65338. Walker, G. P. and Blake, D. H.   The formation of a plagonite breccia mass beneath a valley glacier in Iceland.   Geological Society of London, 1966, Quarterly Journal of the Geological Society of London, Volume 122 : pages 45-61 with 3 figures and 4 plates.   Text extracted from a larger volume, minor signs of use, very good condition.    $8.00

94897. Hill, M. N.   A Discussion Concerning the Floor of the Northwest Indian Ocean.   The Royal Society, London, 1966, Philosophical Transactions of The Royal Society of London, A. Mathematical and Physical Sciences, Volume 259, Number 1099 : pages 133-298 with illustrations.   Softbound, minor signs of use, text in very good condition.   Oversized Item.   $26.00

84490. Millott, N.   Echinoderm Biology.   Academic Press, 1967, Symposia of the Zoological Society of London, Number 20 : 240 pages with illustrations.   Hardbound with good dust jacket, previous owners book stamp, very good condition.    $49.00

65335. Bishop, W. W. and Trendall, A. F.   Erosion-surfaces, tectonics and volcanic activity in Uganda.   Geological Society of London, 1967, Quarterly Journal of the Geological Society of London, Volume 122 : pages 385-420 with 5 figures and 2 plates.   Text extracted from a larger volume, minor signs of use, very good condition.    $14.00

99796. Evans, J. W.   Factors Modifying the Morphology of the Rock-Boring Clam, Penitella Penita (Conrad, 1837).   The Malacological Society of London, 1968, Proceedings of the Malacological Society of London, Volume 38, Part 2 : pages 111-119 with 6 figures and 4 plates.   Softbound, stapled text, very good condition.    $6.00

99701. Kohn, A. J.   Type Specimens and Identity of the Described Species of Conus. IV. The Species Described by Hwass, Bruguiere and Olivi in 1792.   Linnean Society of London, 1968, Journal of the Linnean Society of London (Zoology), Volume 47, Number 313 : pages 431-503 with 9 plates.   Softbound, stapled text, very good condition.    $34.00

65337. Jones, J. G.   Intraglacial volcanoes of the Laugarvatn region, south-west Iceland - I.   Geological Society of London, 1969, Quarterly Journal of the Geological Society of London, Volume 124 : pages 197-211 with 3 figures and 4 plates.   Text extracted from a larger volume, minor signs of use, very good condition.    $8.00

99688. Hudson, J. D. and Palframan, D. F.   The Ecology and Preservation of the Oxford Clay Fauna at Woodham, Buckinghamshire.   The Geological Society of London, 1969, Quarterly Journal of the Geological Society of London, Volume 124 : pages 387-418 with 3 figures and 2 plates.   Softbound, very good condition.    $11.00

95142. Editor.   Triassic Rocks in the British Isles.   Geological Society of London, 1970, Quarterly Journal of the Geological Society of London, Volume 126, Number 501/2, Part 1 and 2 : 291 pages with illustrations.   Softbound, xlib, good plus condition.    $30.00