In the upper division observe specimen^ of prepareiL 'rye CASE 

 Btraw, loj^ether with a hat undUmats made from the same by HI. 

 Irish peasantry at Wexford. 



Noto also roots of Couch Grass {Triticum repent, L.). A 

 troublesome weed, used at Great St. Bernard for strainin<]j 

 milk; they are also sold in Paris under the name of Cuiendknt 

 and used as a tisane or denmlcent drink. Coueli grass roots 

 have beei>^)roposed as a ])aper material, and samples of paper 

 mack' from them are exhibited* 



No. 194. Mounted specimens of TrUicum {JEifilops) 

 ovatnm^ Kasp., which has been suggested iis the wihl form of 

 cultivated wheat. 



A sample of the fii'st meii\ ever made from the grains of 

 2'. o^Y^^^«/M is shown. ,,,!,>■ 



No. 195. Wheat {Tfiticum sativum ^'TJam.): It is un- 

 known in a wild state, but its culture is coeval with th(^ history 

 of agri(;ulture itself; it is now grown all over the world, but 

 mon^ abundantly in the northern than in the southern hemi- 

 sphere. A great number of varieties of cultivated wheat are 

 known, classified generally as hard or soft, red or white wheats; 

 they also differ considerably in chemical composition, the 

 whitest and softest kinds containing but half the llesli-forming 

 substance present in the dark and hard varieties. 



A dry grain of wheat was the origin of our smallest measure. 

 From Alfred (STl-OOl; to Henry VII. (1485-1509) the penny 

 was fixed to weigh " 32 grains of wheat, round and dry, and 

 " taken from the midst of the ear." The Greek, Roman, and 

 Irish systems all took " as their smallest unit a grain of corn.'* 

 Note : " Practically four wheat corns = three troy grains " 

 (Ridgway). • ' 



Several varieties of wheat both in the ear and grain arc 

 shown. 



[Under the circular window between Cases 111 and 112 

 observe a diagram illustrating the flow^j:s,.^n(l grains of wheat, 

 oat, barley, and other grasses.] j -i .,- 



This Case is devoted chiefly to illustrations of varieties of CASE 

 wheat. 112. 



Note grains of wheat and barley from Egyptian tombs. 



A large portion of this Case is occupied with a continuation CASE 

 of specimens of wheat of different varieties. 113. 



Observe also mounted specimens showing the life history of 

 the Gkanary Weevil (Calandra granarid) and the Hessian 

 Fly {Cecidomyia destructor), . ■ ' 



