237, 
3otanic Garden Leaflets, Series X, No. 6, June 14, 1922, The 
‘volution Group at the Brooklyn Botanic Garden, was published 
as a guide to this exhibit, and Leaflets, Series XVI, No. 1, The 
Story of Plant Evolution, appeared April 4, 1928. 
More recently Miss Maud H. Purdy, Botanic Garden artist, 
has prepared a series of imaginary andeen views of geological 
ages, based upon illustrations of the fragments of fossil plant re- 
mains in standard publications. From these drawings the Botanic 
Garden photographer, Mr. Louis Buhle, has made the transparen- 
cies, which were put in place in June, 1932. 
aly 
plants, and make the installation unique and one of unusual educa- 
— 
ese transparencies supplement the evolution exhibit of living 
tional value for school classes as well as for the general public. 
The evolution exhibit and the transparencies were planned by 
Dr. Alfred Gundersen, Curator of plants. 
The Botanic Garden is pleased to acknowledge here its indebted- 
ness and grateful appreciation to the following authorities who 
rave been frequently consulted and have made constructive criti- 
cisms as the work has progressed: Prof. Edward W. Berry, Johns 
Hopkins University; Dr. Arthur Hollick, New York Botanical 
Garden; Dr. G. R. Wieland, Yale University and Carnegie Insti- 
tution of Washington; and Prof. William K. Gregory, American 
Museum of Natural History (for animals).—C. S. G 
—" 
Co 
