voluntarily seek to gain concepts. For example, in our Conserva- 
tory exhibit installed to illustrate the concept of “the evolution of 
the Plant Kingdom,” most unconducted visitors appear to be 
interested chiefly or wholly in the individual plants and not in the 
evolutionary sequence of the different types of plants. This, not- 
withstanding the labels and diagrams displayed with the plants, 
and a special method of installation, all intended to call attention 
to and to teach the probable sequence of types in the development 
of the plant kingdom through the ages. Practically all comments 
overheard from casual visitors are about individual plants; rarely, 
if ever, are there comments about the sequence of forms or the 
oe of the eee to illustrate the evolutionary se- 
quence. (See Fig. . 85.) 
And so it Is a for museums and botanic gardens to 
provide teaching guides, lectures, and courses of instruction to 
supplement the labeled collections and increase their educational 
effectiveness. Our exhibit on “Evolution of the Plant Kingdom” 
is educationally most effective when visited by a class under the 
ance of its teacher or of a Botanic Garden instructor. 
a 
gui 
Broadcasting.—During 1939 thirty-four broadcasts were given 
on the Botanic Garden and various aspects of plant life and gar- 
dening. ‘Twelve of these were over WOR in cooperation with the 
Radio Garden Club, conducted by the [extension Service of 
Rutgers University. A list of subjects and stations is given in 
Appendix 4+ (page 133). According to WOR officials, the Bo- 
tanic Garden is given $240 worth of time for each broadcast. 
Extra-Mural and Intra-Mural lectures, to the number of 123, 
have been given by various members of the Garden personnel in 
— 
cooperation with other organizations and institutions, including 
35 lectures to schools, with a total attendance of 21,380. These 
are listed in Appendix 3 (page 125). 
Publicity and Publication —As noted later, much 
licity resulted from our five exhibits at the World’s Fair. Some 
950 clippings have been received, based on the official news releases 
sent out by the Department of Public Instruction, and also of 
> 
1 additional pub- 
independent origin. 
1A similar experience in - behavior or reaction of visitors to a museum 
is discussed by Mauldred C. Porter in Publications of the American As- 
38. 
sociation of eee oc 16. Washington, 193 
