Kepout (ji Tiiii State Geologist. 677 



teen cents per pound, or thirt}^ cents,) in a gallon of liot 

 Avater, keeping it in a stone jar. Dissolve in another large 

 jar, one pound of common white arsenic (costing about six 

 cents,) and two pounds of saleratus or pearlash, (cost six- 

 teen cents,) in forty-four pounds of hot water, stirring well 

 till thoroughly dissolved. These articles, costing fifty -two 

 cents, will make about five pounds of Paris green, costing 

 about $1.88. 



This can be kept in solution and mixed in proportion of 

 one part of the first and five of the last solution, as they 

 are needed. The green immediately begins to precipitate 

 in a fine powder, and is much more convenient for use in 

 solution than the dry article. Prof. Riley says that Paris 

 green can be in this way used without danger, and all agree 

 that in solution or mixed with floui- when dry and dusted 

 on it is the unfailing remed3^ 



Dr. Le Conte advises the use of large atomizers for not 

 only the destruction of the potato beetle, but of all insects 

 that can be killed by a solution. This idea is worthy of 

 consideration, and it may, doubtless, prove invaluable. 



Next to the potato beetle in number of enquiries conies 

 the 



Striped Squash Beetle. 

 Diahrothica vittata^ Fahr. 



This beetle appears on cucumber and squash vines, as 

 soon as they are through tlie ground, and frequently devours 

 them all in spite of the usual preventives used. They need 

 little description, as they are well known by the yellowish 

 stripes upon each wing cover. They lay their eggs in June, 

 or soon after their appearance, and the larva arrives at ma- 



