AGRICULTUKE AT THE AMERICAN ASSOCIATION. 587 



than the coinnioii pea, it coukl prol)al)ly be exteriuiiiated l)y interrupt- 

 ing- the cultivation of the peas for 1 or "i years, or by thoroug'hly fumi- 

 gating the seed peas. The great practical difiicuities with either one 

 of these plans were carefully discussed. Th(> author recommends har- 

 vesting the peas a little earlier in the fall, and immediately thrashing 

 and sacking the peas so as to prevent the escape of the ])eetles in the 

 fall, and the treatment of all seed peas with l)isulpliid of carbon. 



"W. B. Alwood presented notes on Plants Injured l^y 17-year 

 Locusts. It was stated that the locust did not deposit e^g^ in an 

 orchard which was previously sj^rayed with Bordeaux mixture. The 

 eggs were deposited in a considerable variety of plants, including 14 

 families, 30 genera, and 33 species. 



V. L. Kellogg gave brief notes on observations made on Aleurodidse 

 and Coccida\ A number of new species and new host plants were 

 discovered for these insects, and investigations were made extending 

 throughout the Sierra Nevada Mountains. The Monterey pine on the 

 grounds of Stanford University were badly attacked by the bark 

 beetles, and a tar-canvass jacket was adjusted to the trees for the pur- 

 pose of conducting some fumigation experiments. It was found that 

 hydrocyanic-acid gas destroyed the insects in all stages, while carbon 

 bisulphid was of little value in this respect. 



A. F. Burgess read a paper on Economic Notes on Coccinellidse. 

 Statistical data were presented, including the numl)er of eggs laid by 

 various species of ladybirds, the period occupied by the different 

 stages of development, and the number of plant lice eaten by the 

 ladybirds during their various stages. 



In a paper on Melanoplus feinoratus^ J. L. Phillips stated that this 

 insect caused serious damage in Virginia to pasture and meadow 

 grasses, wheat, and the foliage of apple trees. 



The position of the sette of San Jose scale in the tissues of imported 

 plants was discussed by G. B. Symonds. It was found that the beak 

 of the San Jose scale is inserted in a straight line in fruits, through 

 the cell bodies and not between the cells in the cell membranes. In 

 wood, the beak is bent at a right angle just beneath the surface of 

 the bark. 



H. Osborn discussed a method for mounting dried C'occida? for 

 permanent preservation. Specimens were mounted between strips of 

 mica of the size of microscopic slides. They were thus protected 

 against breaking, moisture, and museum pests. 



Papers on the i nsects of the year and minor entomological notes were 

 presented ))y E. P. Felt, of New York; J. Fletcher, of Canada; 

 H. Osborn, of Ohio; A. L. Quaintance, of Maryland, and C. M. Weed, 

 of New Hampshire, some of which l)rought out discussions in regard 

 to particulai- insects. J. Fletcher stated that in Manitoba hopper- 

 dozers were largely abandoned in the tight against grasshoppers, for 

 more effective poisoned baits, which consist of a mixture of bran or 



