156 TRANSACTIONS OF THE AMERICAN INSTITUTE. 



Wm. S. Carpenter thought that no bug powder would rid a 

 farm of caterpillars. Something else must be done. 



Wm, Lawton said that he had cleared his farm of tent cater- 

 pillars by pulling down the nests by hand, with all the worms in 

 them, when they are easily destroyed. 



THE LOCUST QUESTION. 



A long discussion ensued upon the locust question between 

 Prof. Mapes, Prof Nash, Wm. Lawton, Wm. R. Prince, Doct. 

 Trimble, Andrew S. Fuller, which was not particularly interest- 

 ing to those present, nor would it be to others if reported. In 

 fact, Mr. Fuller stated that there was not a schoolboy of any 

 pretension, that had not read all about the locust — all and more 

 than had been stated here, and that it was a waste oi time to 

 talk about them. 



Prof. Mapes exhibited the effects upon branches punctured by 

 the females to lay their eggs, but still thought without perma- 

 nent injury to the trees. 



Wm. R. Prince declared the whole theory of the seventeen- 

 year locusts a humbug. 



Prof Nash thought they returned in some localities in thirteen 

 years, and inquired if the nature of the soil had any eifect upon 

 their maturity. 



VARIETIES or THE LOCUST. 



Andrew S. Fuller — We have many varieties of what are called 

 locusts, among which are the Cicada Septemdecem, Cicada Cani- 

 cularis, Cicada Eimosa, Cicada Marginata, Cicada Superba, Cica- 

 da Robertsonia, and perhaps several others. The habits of these 

 are well known, and have been for many years. The seventeen- 

 year locust has appeared regularly every seventeen years for 

 more than one hundred years, as is well attested by numerous 

 writers upon natural history. 



GEISHARSt's compound for INSECTS. 



P. B. Mead said that he has tried the above compound upon 

 several kinds of insects, and found it sure death to all he had 

 applied it upon. The objection to it is its high price — too high 

 for common use ; if it would rid us of the curculio it would make 

 the plums too costly. 



John G. Bergen — It is a fact that we have a prospect this year 

 of a larger crop of plums than we have had in many years, and 



