378 



make a test of his discovery there with tlie resuU that his first 

 experiment was successful Grass fields where locusts were 

 feeding- were inoculated by sprinkling cultures of the germs on 

 the grass. Barriers confined locusts for observation and those 

 that ate of the grass died in six days. 



Infected locusts liberated rapidly spread the disease to other 

 fields 30 miles away. Forty days later the epidemic had spread to 

 locusts 250 miles away. 



It is claimed that animals grazing on the infected grass were 

 not injured. 



From the fact that this epidemic disease of locusts was dis- 

 covered in the tropics, it should be applicable here. — 3^1indanao 

 (P. I.) Herald. 



proves Its Worth 

 ^^ at Harvest Time 



■ Crops must have Nitrogen, and the most avail- 

 I able is that in 



I Nitrate of Soda 



I Moreover, because of this 100 "o availability, it is 

 I the cheapest form of Nitrogen. Nitrate of Soda 

 I is odorless, clean to handle and easy to apply. 



I We Want to Send YOU a Book— FREE 



H that we have prepared on the use of Nitrate of Soda. Send 

 H for it, follow it and get bigger crops. Address a Post Card to 



■ Dr. WILLIAM S. MYERS, Director Chilean Nitrate Propaganda 



No Branch Offices 



17 Madison Avenue, New York 



