These plant life studies are associated with such 

 products as may be yielded by the plants of the family, 

 and utilized by man in the arts, industries, or as food. 

 Exhibits of this type follow through Halls 28, 29 and 

 25. The specimens illustrating the products are in 

 quantities proportionate to their use. For instance, a 

 little used gum or resin is illustrated by a single speci- 

 men ; Indian corn by twelve whole cases. Another val- 

 uable fact demonstrated is that the products of plants 

 in each family are as distinct in their uses, as the 

 plants themselves are in their botanical character. It 

 appears, for example, that if one member of a family 

 yields a dye, other members are likely to yield dyes. 



There are two other halls in the department. One 

 of them is devoted to the timbers of the world arranged 

 geographically, the woods being partly in their natural 

 condition and partly finished to show their character 

 in cabinetry. The display of Japanese woods is the 

 most complete ever brought together. The second of 

 these halls is devoted to the trees of North America. 

 The diameter of the specimens selected are one half of 

 the average diameter of the respective species ex- 

 hibited. Each species is installed in a separate case. 

 Labels and maps are attached which supply complete 

 information. In the center of the hall is a red-wood 

 trunk of half the diameter to which the species grows. 



The herbarium is on the third floor. It contains 

 more than 500,000 specimens. They are accessible, on 

 application, to those who are specially interested. 



Page Twenty-two 



