(5) 



Fleshy or Fresh Fruits 89-104 3395-4066 152 



Nuts, Dry Seeds, etc 104-1 10 4067-4366 1 85 



Cereals and Other Grains m-114 4367-4772 197 



Drugs 20 9 



Underground Portions 115-120 4773"5 116 2I1 



Barks and Woods I39~i44 5^ l 7S3^° 22 9 



Leaves 163-168 5381-5629 242 



Herbs and Plant-bodies 169-174 5630-5868 254 



Inflorescences and Flowers 148 5869-5945 267 



Fruits H5> 149-15° 5946-6067 271 



Seeds 146-147 6068-6161 277 



Miscellaneous Drugs 124-126 6162-63 15 281 



Poisonous Plants in the Vicinity of New- 

 York 121-122 6316-6427 288 



Insecticides 123 6428-6448 295 



Woods and Wood Products 192-208 6449-6992 296 



Charcoals 209 6993-7069 3 16 



Miscellaneous Articles 210 



CATALOG OF EXHIBITS 



With Descriptive Notes and Other Information 



Plant Hairs and Fibers 



In common parlance, some plant hairs, such as cotton, 

 are often spoken of as "fibers," but there is a valid distinc- 

 tion between these two classes of tissues, both of which 

 possess important uses in the arts. Fibers are internal 

 structures pertaining to the framework of the plant, while 

 hairs are of epidermal origin. 



Plant Hairs 



Plant hairs belong to the class of structures known as 

 trichomes. These are appendages developing from the 

 epidermis of various parts of the plant, and include scales, 

 papillae, spicules, epidermal glands, prickles, and all other 

 appendages of the superficial layers of cells. They serve 

 the plant through protection, nutrition, and seed distribu- 

 tion. When long, slender, and flexible, they are known as 



