No. 104.] 113 



rods toward the south, to serve as a food supply in the event of the 

 death or destruction of the orchard. 



As I may not hope to see the result of this experiment, may I 

 beg of some of the members of the Institute who are interested in 

 Natural History, that in the month of June, 1898, the}' will make 

 examination of the labeled tree, and trees adjoining, for the pupa 

 cases of the Cicada that should be found upon the trunks, and for 

 the insects in the vicinity, which should easily be discovered, if 

 present, by their well-known song, which would readily reach the 

 ear. Should they fail to appear at the time designated, then the 

 search for them should be renewed the following year, and for 

 successive two or three years, until their appearance. 



The result of the observations should be communicated to the 

 Entomological Division of the Department of Agriculture at Wash- 

 ington, unless it should be known that full examination had already 

 been made by an agent delegated for the purpose from the Depart- 

 ment. 



In the planting of the eggs I was assisted by Mr. William Grey, 

 gardener of Mr. Erastus Corning, who has been requested to com- 

 municate to others upon the farm the location of the tree in order 

 that there may be no difficulty in finding the locality at the desired 

 time. 



In addition to the above, other transfers of the eggs of the 

 thirteen-year Cicada from Mississippi, have been made, to Ithaca, 

 N.Y. ; Boston, Mass. ; Kittery Point, Me. ; Brunswick, Me. ; and 

 Ames, Iowa, as noticed in Entomologica Americana, for August, 



1885, vol, ], p. 96. Similar transfers, under direction of Prof. 

 Riley, of eggs of the seventeen-year Cicada, have been made the 

 present year from Indiana, Michigan and Pennsylvania, to localities 

 in Alabama, Georgia, Mississippi and Missouri. 



[For a subsequent notice of the above series of experiments, see 

 Prof. Riley's report to the Department of Agriculture, for the year 



1886, pp. 254-257.] 



Scalk-Insect Attack on Ivy. 



The following note of inquiry in relation to a quite common in- 

 sect attack of the ivy has been received from a lady in Watervliet. 

 N.Y. J y 



" Inclosed please find a leaf of ivy. Will you please inform me 

 of the cause of its peculiar appearance, and also the remedy, if any ? 

 The leaf and stem are alike infected, and the whole is in an unhealthy 

 condition." 



Reply was made that the leaf sent for examination showed upon 

 both surfaces, clustering about the veins and more thinly distributed 

 elsewhere and upon the leaf-stalk, many whitish, rounded, slightly con- 

 vex spots, varying in size from almost microscopic to nearly as large 

 as the head of a common pin. Examined under a lens, their peculiar 

 [Assem. Doc. No. 104.] 15 



