182 GRASSES OP IOWA. 



ing two or three inches in diameter, were taken from the 

 stomach of horses, whose death they had caused. They were 

 compact and much resembled the hair-balls often found in the 

 stomachs of ruminants, but were entirely eomposed of the small 

 barbed trichomes from the mature calyx of crimson clover." 

 Millets are said also to produce "masses" probably hair-balls 

 according to a writer* in the American Agriculturist. 



Harzf has given an account of the injurious effects of oats 

 bran. This feed favors the development of large bezoars. In 

 the paper cited he has extensively discussed this question 

 as well as giving references to literature. 



Corn Moulds and Disease. 



It is not uncommon some years to find that many ears of corn 

 are affected with various moulds. These moulds frequently 

 appear as the results of the attack of Heliothis armigera-, how- 

 ever, this is not always the case. Sometimes only the top is 

 affected, or only a part of the ear both at lower and upper end, 

 or several rows may be attacked. These moulds are mostly 

 saprophytes, and so far as known do not attack living tissues. 

 One of the most frequent of the moulds is the green mould 

 Eurotium [Aspergillus) glaucus which is described elsewhere in 

 this paper. 



N. S. Mayo,t as the result of 

 some work done in Kansas, con- 

 cludes that a disease known as 

 "staggers," "mad staggers, " or as 

 he has termed it enzootic cerebritis 

 is caused by feeding corn which is 

 attacked by Aspergillus glaucus. 

 Mayo states that the spores of the 

 fungus gain entrance to the circu- 

 lation, and find lodgment in the 

 kidneys and liver. He supports 



, . , . , . , Fig. 76. Mould from mouldy corn 



his conclusions by experiments (Botryte* vulgaris), showing conidl- 



, , , . . . J ophore and spores. (Pammel and 



made by him on a guinea pig and a King.) 



young colt. He also quotes Kaufmann, who was successful 



in producing a disease with Penicillum glaucum and Aspergillus 



glaucus. 



*1882: 127. 



tHarz. Land. Samenk. 2: 1315. 



$Bull. Kansas Agrl. Exp. Station 24: 1891. 



