MICROSCOPICAL AND NATURAL SCIENCE BOOKSELLER. 



New and Second-hand Works on Algae, Biology, Botany, Chemistry, Corals, 

 Conchology, Desmids, Diatoms, Entomology, Fossils, Geology, Histology, In- 

 fusoria, Microscopy, Mineralogy, Natural History, etc. 



Catalogue will be sent on application. Back parts of various Microscopical 

 Journals always in stock. Microscopical Books bought or exchanged. 



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57 Great Portland St., Oxford St. ? London, England. 



R. FBIEDLANDER & SOHN, Natural History Booksellers, 



Berlin (Germany) if. W. 9 Carlrtr. 11 9 



have published every fortnight, since 1870: 



Naturae Novitates; Natural History News. 



Bibliographic List of the current Literature of all Nations on Natural 



History and Exact Sciences. 

 Price $1 per year (25 Nos.) r post-free. Specimen-number gratis on application. 



1891 p ninth year of publication. 

 Back volumes, each complete with index, still to be had. 



European Lichens for Sale. 



South 



Lichens, at the low rate of $4.00 per hundred. Many fine and rare species. 

 List and particulars furnished on application to 



Dr. B. F. G. EGELING. Meridian, Conn- 



TRACY, GIBBS & CO. 



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 SPECIALLY FINE EQUIPMENT FOR PRINTING-*- 



Local Floras, College Annuals 



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College Catalogues, Etc., Etc 



ESTIMATES GIVEN ON APPLICATION. 



TRACY, GIBBS & CO., Madison, Wis 



