Department of Botany and Plant 
Economics. 
This department occupies the galleries of the North, South, 
East (in part) and \\ est Courts of the main building, and may 
be reached by any of the four flights of stairs near the central 
rotunda, or by stairwa}"s at the ends of the east and west courts. 
The intent of this guide is to call attention, in a general way, 
to the salient points in the Economics of Botany as here installed. 
No attempt is made to catalogue the contents of the cases, as the 
labels for each family, group and specimen are full and 
explanatory. It will be understood that the installation of this 
great subject is but barely begun despite the fact that it is rep- 
resented at the present writing by over 300 fully installed cases. 
Systematic Botany: many whole families; North American For- 
estry ; the great alliances of the fungi, mosses, lichens, algae 
(sea weeds), and liver-worts; and many other groupings have 
not as yet been given place in the installations because of lack 
of time, space or material. 
ARRANGEMENT. 
On account of the rapidly increasing collections, and instal- 
lations, it is impossible at the present time to keep up a purely 
systematic arrangement of the cases. Those visitors who wish 
to view the families of plants in systematic order will find ref- 
erences made under each of the family headings, in this guide, 
to other cases that contain further material in the family. 
Location of the Gases. 
The cases are plainly numbered in the center of the sash 
above the glass, and may be found as follows : 
Cases. Location. 
Nos. 1 to 99 Encircling the central rotunda. 
Nos. 100 to 199 Galleries of the North Court. 
Nos. 200 to 299 Galleries of the East Court. 
Nos. 300 to 399 Galleries of the South Court. 
Nos. 400 to 510 Galleries of the West Court. 
