books:: 1 ; 



WILLIAM J. GERHARD, 



2209 CALLOWHILL STREET. PHILADELPHIA, PA., 



3 the following at affixed net prices. Extended catalogues 

 of books and pamphlets in all branches of natural history post-free on request : 



1. American Journal of Conchology. 7 vols., partly bound t26.00 



2. American Journal of Science. Second Series, volumes 1-10. Half roan 



(3 vols, somewhat waterstained) 10.00 



3. American Mineralogical Journal (Bruce). 1 vol., 1814. New half morocco 10.00 



4. American Monthly Microscopical Journal, vols. 1-20 (1888-1899), of which 



14 vols, are half roan 15-00 



5. American Naturalist, vols. 1-6 (1868-72) 9.00 



6. Annals N. Y. Academy of Science, vols. 4-14 (1887-1898). Cloth 22.50 



7. Annuaire du Musee Zoologique de V Academie des Sciences, St. Peters- 



bourg, vols. 1-7 (1896-1902), lacking one number of vol. 1 10.00 



8. Bulletin American Museum of Natural History, vols. 1-11 (1887-1901) ... 27.50 



9. DeKay. Zoology of New York-Birds. 4to. Cloth. 141 colored plates 10.00 



10. Gaudry, A. Animaux fossiles et geologie de 1'Attique. 2 vols., folio, 



1862-67. Half calf, 75 plates and map 35.00 



11. Harlan, E. Medical and physical researches, etc. 1835. Cloth 7.50 



12. Journal and Proceedings Royal Society of New South Wales, vols. 11 



(1877) to 23 (1890), except vol. 14. Partly bound in cloth 13.00 



13. King, C. United States Geological Exploration of 40th Parallel. Com- 



plete set, 7 vols., quarto, cloth, and two folio atlases 22.50 



14. Microscope (The), vols. 4-11. 8 vols, in four. Half roan 7.50 



M0 ^the%nitedSt^es S °iWL °Half roan. Rare gr ... P 15.00 



16. Pritchard, A. History of Infusoria, including Desmidiaceae and Diatom- 



aceae. Fourth (last) edition. 1861. Half morocco 8.00 



17. Proceedings Lit. and Philos. Society of Liverpool, vols. 1-34 (except 



vols. 5, 10, 11, 12, 16, 17, 20, 21), partly bound 16.00 



18. Reports of Explorations and Surveys ... for a railroad from Miss. 



River to Pacific Ocean. 13 vols. 4to. Bound 12.00 



19. Smithsonian Miscellaneous Collections, vols. 1-6 (1861-67). Scarce 13.50 



