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Caudry, Albert. Les ancetres de nos animaux dans les temps geologiques. 12mo. 

 Paris, 1888. I. V. Williamson Fund. 



Geikie, Archibald. The teachmg of geography. 8vo. London, 1887. 

 Text book of geology, lind Ed. 8vo. London 188-5. 



I. V. Williamson Fund. 

 •Geinitz, H. B. Zur Dyas in Hessen. Kassel, 1S8S. 



Nachtrage zu Funden in den Phosphatlagern von Helmstedt. Biiddenstedt 



u. a. 1883. 

 Die Versteinerungen des lithographischen Schiefers im Dresdener Museum. 

 1881. The Author. 



■Genth, F. A. Lansfordit, ein neues Mineral. 8vo T. (1888). 



A letter to the Hon. the Board of Trustees of the Universirs' of Pennsylvania. 



June 25, 1888. ' The Author. 



Gerstaecker, A. Das Skelet des Doglings, Plyperoodon rostratus. 4to, Leipzig, 



1887. ' I. V. Williamson Fund. 



Gibson, John. Great waterfalls, cataracts and geysers, descnbed and illustrated. 



8vo. London, 1887. ' I. V. Williamson Fund. 



Gilbert, G. K. Statistics of the Philosophical Society of Washington. 8vo T. 



The Author. 

 Gilbert, J. H. Results of experiments at Rothamstead, on the growth of root- 

 crops for many years in succession on the same land ; being a lecture deliv- 

 ered July 27, 1887, at the Royal Agricultural College, Cirencester. 8vo T. 



The Author. 



Godman, F. Ducane and Osbert Salvin. Biologia Cenlrali Americana. Zoology, 



Pt. 62-69. Botany, Pt. 24. I. V. Williamson Fund. 



Godwin- Austen, H. H. Land and freshwater mollusca of India. Plates and 



text. Pt. VI. I. V. Williamson Fund. 



Goodall, Geo. L. The wild flowers of .\merica. With illustrations from original 



water color paintings by Isaac Sprague. 4lo. Boston, n. d. 



I. V. Williamson Fund. 

 Gosse, Phillip Henry. xActinologia Britannica. A history of the Briii-h sea-, 

 anemones and corals. 8vo. London, 1860. I. V. Williamson Fund. 



Gould, John. Tlie Birds of New Guinea. Pts XX— XXIII. 



Supplement lo the Trochilida- or Humming Buds. Pt. V. Wilson Fund. 



Grandidier, Alfred. Histoire physique, naturelle et politique de Madagascar. 



XVL Alias, ]7e. Fasc, XVIII, T. 1, Texle, Ire. Partie, LSe. Fa.sc ; 



XXII, Atlas, 16e. Fasc. I. V. Williamson Fund. 



Gray, Asa. Memorial of the American Academy of Arts and Sciences, 18H8. 



The Society. 

 Portrait of. Editors of Torrey Botanical Bulletin. 



List of the Writings of. Mrs. Asa Gray. 



Green A. H. Geology. Part I., Physical geology. 8vo. London, 1882.. 



I. V. Williamson Fund. 



Greene, Edward L. Pittonia. I, 1-3. 8vo 1887. The Author. 



Griiber, Wenzel. tieobachtungen aus der menschlichen und vergleichenden 



Anatomic, VIII. I. V. Williamson Fund. 



Giimbel, K. Wilhelm von. Geologic von Bayern. I Th.. .=> L; Title and 



Index. I. V. Williamson Fund. 



Guerne, Jules de. Campagnes scientifiques du Vacht Mone^asque L'Hirondelle. 



Troisieme annee. 1887. Excursions zoologiques dans les lies de Fayal et 



de San Miguel fAgores). 8vo. Paris, 1888. Prince Albert of Monaco. 



■Guppy, H. B. The Solomon Islands, their geolog}-, general features and suitability 



for colonization. 8vo. London, 1887. I. V. WiUiamson Fund. 



Harden, John H. and Edw. B. The construction of maps in rehef. 8vo T. 



July, 1887. Edw. B. Harden. 



Harvey, F. L. The fresh water alga of Maine. 8vo T. The Author. 



Haughton, Rev. Samuel. Geometrical illustrations of Xewland's and MendelejefF's 



periodic law of the atomic weights of the chemical elements. April "8th 



and May 14th, 1888. 8vo T. The Author. 



