392 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



were healthy, and the eggs are considered healthy likewise. 

 Should, however, a glass-like, crystalline body of an oval form 

 be observed in the drop, the eggs are doubtful, and are re- 

 jected. If two such bodies are seen, the tulle bag is burned 

 at once. 



Susani employs 25 girls during the whole winter, each of 

 whom makes 200 examinations daily. There are sometimes 

 as many as half a million bags at a time hung up in large, 

 warm rooms, where the work is carried on. This tedious but 

 sensible proceeding has proved very effective, and it is hoped 

 that, in time, Italy may be freed from the ravages of the 

 silk-worm disease. 2 A^ November 23,1872,347. 



DECLINE OP THE SILK-WORM DISEASE. 



Mr. Guerin Meneville, an eminent practical entomologist 

 of France, and one who has devoted much attention to the 

 maladies of the vine and of the silk-worm, finds occasion to 

 conclude, from recent investigations, that the silk-worm dis- 

 ease has run its course, and has already left certain mount- 

 ainous portions of France and adjacent regions. In these the 

 eggs produced are generally sound, whether treated accord- 

 ing to Pasteur's system or in the ordinary manner ; and it is 

 found that the same eggs, carried to a country where the dis- 

 ease is decreasing, will, in a large percentage of cases, yield 

 sound worms, and that where the crisis has not been passed 

 they almost all become worthless. 3 B,Feh. 27, 1873, 397. 



CURE OF SILK-WORM DISEASE. 



Guisque maintains that the diminution of the disease is 

 simply the result of the important researches and inquiries 

 of Pasteur, and that to him the French people and the world 

 at large owe the discovery and application of a method so 

 beneficial in its results. 6 B, March 24, 1873, 783. 



DESTRUCTION OF MAY-BUGS OX A LARGE SCALE. 



In the royal forests of Bischofsroda a successful experi- 

 ment has lately been made in destroying May-bugs on a 

 large scale. The modus operandi was suggested by the ob- 

 servation that these bugs always select warm and loose 

 ground for the deposition of their eggs. Consequently, sev- 

 enteen artificial breeding-places were prepared by covering 



