A WORLD OF WAR 



247 



tread on them, and cause painful 

 wounds. The animal earries the seed 

 to a distance, and the plant has then 

 accomplished its purpose ; it has 

 widened its range of growth. 



The manner in which this caltrop, 



IT IS WELL NAMED "TEAR-THUMB." 



sometimes called a tribulus, succeeds 

 in its cruel work reminds one of the 

 modern submarine vessels that work 

 in secret, hidden beneath the water, or 

 destroy other vessels by means of con- 

 cealed torpedos. The caltrop, like the 

 nations at war, is trying to extend its 

 territory by inflicting pain or injury on 

 innocent and defenceless non-combat- 

 ants. 



The Inventor and the Investigator. 



In general the objects of the investi- 

 gator are mainly altruistic while those 

 of the inventor are mainly egoistic ; the 

 one seeks to give freely to the world 

 the results of his researches, the other 

 seeks personal benefits by aid of let- 

 ters-patent. — Dr. R. S. Woodward. 



Inheritance of Milk Yield. 



F. R. Marshall of the United States 

 Bureau of Animal Industry, after a 

 careful study of some thousand or 

 more registered Holstein cattle, de- 

 clares that there is no foundation 

 whatever for the very widespread im- 

 pression that either milk-yield or yield 

 of butter fats is inherited more fully 

 through the father than through the 

 mother. He finds that, on the con- 

 trary, where both parents are of equally 

 good stock, offspring are as likely to 

 follow one strain as the other. 



The Captive Hawk. 



One of the magazine's friends mails 

 to us a photograph taken by Mr. John 

 G. Herrick, North Weare, New Hamp- 

 shire. The hawk there shown was 

 trying to catch chickens. His escape 

 was prevented by a wire netting and 

 the low boughs of an apple tree. A 

 woman seized the hawk's legs and, 

 after tying them, put him in a bag. 

 She then gave the bird to a neighbor 

 who disposed of him after taking sev- 

 eral photographs. This variety of 

 hawk is the worst enemy with which 

 the poultry raiser of that vicinity has 

 to contend. During some years these 

 hawks are so plentiful that at least half 

 the flock of chickens is carried off. It 

 is impossible to keep the chickens 

 completely yarded and protected by 



THE CAPTIVE HAWK. 



netting 



They must have some free- 

 dom to seek food, grass, etc., and in 

 that freedom the hawks swoop down 

 and carry off many of them. 



