226 MATERIAL, APPARATUS, AND SUPPLIES 



J. Whitall, Tatum & Co., New York City. Glassware. 



K. Williams, Brown & Earle, 918 Chestnut Street, Philadelphia, Pa. 

 Beck microscopes, apparatus, glassware, and general supplies. 



L. Queen & Company, 1010 Chestnut Street, Philadelphia, Pa. Micro- 

 scopes, apparatus, glassware, and general supplies. 



219. Lantern slides and charts. Lantern slides are sold singly or in sets by : 



A. Cambridge Botanical Supply Company, Cambridge, Mass. 



B. St. Louis Biological Laboratory, St. Louis, Mo. 



There are a number of sets of charts on the market. The most com- 

 plete are : 



C. Kny. Botanische Wandtafeln, a series of 105 so far published, price 

 355 Marks. Paul Parey, Hedemannstrasse 10, Berlin, S.W. 



D. Prank-Tschirch. Wandiafdn fur den Unterricht in der Pflanzen- 

 physiologie, a series of 60, price 180 Marks. Published also by Paul 

 Parey (see above). 



A new set of charts has recently been announced, which promises well. 



E. Baur-Jahn. Tabulm Botanicw, to appear in series of five, 25 Marks a 

 series. Published by Gebruder Borntraeger, Dessauerstrasse 29, Ber- 

 lin, S.W. 



