392 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



ment take great interest in it, and are very particular not to 

 allow any molestation. The passage of a law was also ob- 

 tained forbidding their being killed for five years. 



English sportsmen are now taking measures to introduce 

 the same species into Great Britain and Ireland, with what 

 success remains to be seen. 



REARING THE AMERICAN WILD TURKEY IN FRANCE. 



Mr. Edgar Roger has paid much attention to the rearing 

 of the American wild turkey in his park near Nandy, in 

 France, and has met with great success in managing them. 

 They are allowed to run free in a walled park seventy-five 

 acres in extent, and when their wings are untrimmed they are 

 in the habit of going off into the surrounding country, some- 

 times to the distance of many leagues, seeking their food, 

 but always returning at night to a particular tree selected 

 by them as a lodging-place, 10 B, May, 1874, 370. 



THE BEST INSECTICIDES. 



The injuries caused by insects to certain crops are in 

 many cases only to be prevented by the use of poisons ; and 

 it is a matter of much importance to select those which shall 

 be most efficient while at the same time least likely by their 

 color and character to involve danger from their use. The 

 prevention of the ravages of the Colorado potato beetle, which 

 have been so serious within the last two years, can, it is said, 

 only be accomplished by the application of Paris green or 

 Scheele's green, an arsenite of copper; and the practical suc- 

 cess of this treatment has induced the United States Agricult- 

 ural Department to invite experiments as to its effect upon 

 the cotton worm. It is estimated that a loss of not less than 

 a quarter to a half million bales of cotton takes place annual- 

 ly from this cause alone, which, at $100 per bale, would 

 amount to from $25,000,000 to $50,000,000. 



A circular has accordingly been transmitted by the De- 

 partment to its correspondents in t cotton-growing countries, 

 and the monthly report of the Department for November 

 contains a digest of the replies to the queries contained 

 therein. The general conclusions to which the department 

 arrives are that the use of one part of Paris green, pure and 

 unadulterated, mixed thoroughly with twenty-five or thirty 



