632 abstracts: plant physiology 



merits on cattle and sheep which show not only that the plant is poi- 

 sonous, but that it produces many of the symptoms of milk-sicloiess, 

 and undoubtedly is the cause of many if not most of the cases of so- 

 called milk-sickness in cattle and sheep. The symptoms of the poison- 

 ing and the pathological results are worked out. The dosage is deter- 

 mined, and it is noted that Eupatorium poisoning is cumulative. It is 

 not considered by the authors that Eupatorium poisoning explains all 

 cases of milk-sickness, but it is thought probable that under this term 

 is included also a bacterial disease. 



The second paper is a resume of the work on Eupatorium, of a 

 more popular character than the above, and designed for distribution 

 among the farmers. C. D. M. 



BOTANY. — The ^peanut a great American food. H. S. Bailey and J. 

 A. LeClerc. Yearbook, U. S. Dept. Agr. 1917: 746. 1918. 

 The composition and yield of the peanut and the methods of making 

 peanut oil and peanut flour are discussed. It is shown that the shelled 

 nuts are a splendid food, cheap and nutritious, and that peanut butter 

 is highly useful in many ways, being rich in fat and protein. The 

 methods of using peanut butter, peanut oil, and peanut flour are given. 



PLANT PHYSIOLOGY.— TT/jeaf flour substitutes. J. A. LeClerc. 

 Iowa Coll. Agr. Bull. 16: no. 33. 1918. 

 This is an address given at the Bakers' Short Course at Ames, Iowa. 

 History of the use of substitutes was touched upon and likewise a 

 digest of the food situation prevailing at the time. A discussion of 

 the wheat kernel and of the composition of the various parts of the 

 wheat kernel and likewise the losses due to miUing were given. The 

 speaker compared the amount of food value to be derived from 100 

 pounds of wheat when milled into white flour and when milled into 

 graham flour. J. A. L. 



PLANT PHYSIOLOGY. — Respiration and catalase activity in sweet 



corn. C. O. Appleman. Amer. Journ. Bot. 4: 207-209. 1918. 



Respiration in sweet corn in the milk stage is very high when the 



corn is first pulled. This liigh rate of respiratory activity falls off 



rapidly with storage. Catalase activity in a collateral set of ears 



