Eastman Organic Chemicals 
MADE IN U. S. A. 
A large number of our 1700 fine 
organic chemicals are used by 
Botanists in their investigations 
and for class room instruction. 
Send for Organic Chemical List No. 10 , a 
handbook of America's organic chemicals 
Eastman Kodak Company 
Research Laboratory Rochester, N. Y. 
WHELDON & WESLEY, Ltd. 
Incorporating the old established firms of 
JOHN WHELDON & CO. 
and 
WILLIAM WESLEY & SON 
Sole Address: 2, 3, & 4 Arthur Street, New Oxford Street - - LONDON, ENGLAND 
Cables: Wheldwesly, London. 
BOTANICAL BOOKS AND PERIODICALS 
Both New and Secondhand are in stock. 
Librarians and Scientists are invited to send their list of Desiderata in 
HERBALS AND OTHER EARLY PRINTED BOOKS 
Books on 
AMERICAN PLANTS 
FOREIGN FLORAS 
FERNS, FUNGI 
LICHENS, MOSSES 
Lists of Publications of the 
BRITISH MUSEUM, INDIA OFFICE, AND SMITHSONIAN INSTITUTION 
for which Wheldon & Wesley, Ltd., have the Agency, may be had on Application 
Write for Catalogues 
ALGAE, DIATOMS 
GARDENING 
GARDEN DESIGN 
Always mention the JOURNAL OF BOTANY when answering our advertisements. 
