W 



J 



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. 



157 Great Portland St., Oxford St., London, England. 



COPIES OF COULTER & ROSE'S 



RsYisicn of Horth American Umtellif erae 



Can be obtained for One Dollar by addressing 

 I»HLOF. JOHN M. COIXTER, Crawfordsirille, Ind. 



Back Numbers Wanted. 



The 



Vol. VI, No. 9 (Sept., 1881); Vol. X, Nos. f a»d 8 (July and Aug., 1885); Vol. 

 VII, Nos. 8 and 9 (Aug. and Sep., 1882); Vol. XI, No, 1 (Jan., 1886). 



M "^^ W, ^ P ' *"' " Pl " " ■ "" p »" ■ — ^ ^— ^— m - ■■ — ,, ■ ■■-# ^ ^^ ^ __ i ■ ^^^^^^g^FMWt^^^— *^*'^ M "'* i "^ M ^*" 



Florida Lichens For Sale ! 



In sets of 100 species accurately named, collected by myself, among them 

 seven or eight new species discovered by me. At the low price of Five Dol- 

 lars per hundred. Address, 



W. W. CALKINS, Chicago, III., 147 California Ave. 



« fteittsfhe bofamsch* 



A MONTHLY JOURNAL 



For Systematists, Florists and all interested in the German Flora. 



7tli Year, 1889. $2*00 a year, post free. 



Address PROF. DR. LEEKBACH, Arnsladt, Tliuringia, Germany 



