(226) 
section and brings out clearly the anatomical basis of the 
annual growth rings. And yet another shows a cross 
section of the submerged stem of an aquatic plant with 
its large air spaces and poorly developed strengthening 
tissues. 
(c) Local Flora. In this collection it is designed to 
illustrate every plant-species growing naturally or without 
cultivation within one hundred miles of New York City. 
For the most part specimens of the plants themselves are 
used, but in cases where the structure of the plants renders 
this method undesirable, or impossible, a photograph or 
a drawing is substituted for the plant-specimen. This 
collection is displayed in swinging frames which are placed 
so as to correspond in a general way to the sequence of the 
cases of the synoptic collection already described; thus, 
the first stand is near the first museum case as one enters 
the west hall from the top of the staircase. All of the 
plant groups are here represented by those members that 
occur locally, and the characteristics of the several groups 
as mentioned under the Synoptic Collection also apply 
here. 
(d) The Plant Photograph Exhibit. A series of over 200 
enlarged photographs, illustrating plant societies, habit- 
characters, flower-characters, and fruit-characters of the 
higher plants, as well as habit and structural characters of 
some of the larger algae and fungi, are displayed in frames 
fastened to the walls of the systematic museum. As far 
as practicable, they have been placed near the cases con- 
taining representatives of the species illustrated. The 
photographs are II x 14 inches in size and are mounted in 
glazed frames, some frames containing 4 and others 6 
photographs. 
3. THE MUSEUM OF FOSSIL BOTANY 
This collection, installed in the basement, is designed to 
show the successive stages of evolution through which the 
ancestors of our living flora have passed since the time of 
