1052 EXPERIMENT STATION RECORD. 



found to hatch in about S days. The author has been unable to find any 

 previous re|)ort of the dejKisition of engs in fruit by this insect. 



Crocigrapha normani, Edith M. Patch (Ent. Ncict, 19 (1908), Xo. 7, /;/). 

 .L'/. U^. 1)1. I). — Notes are };iven on the life liistory of this noctuid. Eggs were 

 talven from a leaf of the wild cherry. The larvje were found to feed readily 

 ui>on leaves and the small grcHMi fruit of the ai)i)le. 



The tussock moth in orchards. W. J. Schoknk (Xew York Htnte Hia. Jiiil. 

 Jl^, PI). 3!i-.'f9, ijis. d). — The white-marketl tussock-moth (Hemerocampa Icucos- 

 tigiiia) is said to have a|)i)eared in destructive numbers in the vicinity of Lock- 

 port. New York, during the summer of 190S. A description is presented of the 

 biology of the pest. Cocoons collected or examinefl at Lockport were found 

 infested by the hynienopterous ]iarasites Phnpla itKiutsUor and P. conquisHor 

 and by tachinid tiies (Tdcliina clixioctnniKr and Sisi/ropa n. sj).). The insect 

 may be efliciently controlled by collecting and destroying the egg masses and by 

 the use of arsenical sprays. 



Orchards injured by tussock moth, F. H. Hall (A' no York State St a. Bid. 

 312, popular cd.. pp. 5. fitj-s. (>). — A popular edition of the above. 



Must the caljrx cup be filled? M. V. Slingerland (Jour. Econ. Ent., 1 

 (190<S), Xo. 6, pp. 3o2-3o.'i, pi. 1). — The author made investigations of the feeding 

 habits of young codling moth larvjie to determine whether they feed in the upper 

 calyx cavity after squeezing through between the calyx lobes, or go on down 

 through the closely-set row of stems into the lower calyx cavity for their first 

 meal. It was found that in every case where the young larva had entered the 

 apple at the calyx end it had fed for several days, or through the first larval 

 stage, in the outer calyx cavity. 



Proprietary and homemade m.iscible oils for the control of the San Jose 

 scale, C. D. Jarvis (Connecticut Storrs Sta. Bid. 54, pp. 169-197, fig. i).— This 

 bulletin supersedes Bulletin 49 of the station previously noted (E. S. R., 19, 

 p. 662). It furnishes additional information in i-egard to the home manufac- 

 ture of miscible oil, throws some light on the various commercial soluble oils, 

 and reports the results of experiments with oil spraying in various sections of 

 the State. As compared witli lime-sulphur wash miscible oils are found to be 

 more convenient, more pleasant to handle, less destructive on spraying equip- 

 ment, and more efficient, especially with large apple trees. 



" From the results of these experiments it seems safe to conclude that when 

 used at the rate of 1 : 15, the commercial and homemade miscible oils may 

 be depended upon to control the scale without injury to the tree. Their pre- 

 dominating weakness lies in their failure to leave a mark on the tree. This 

 lack of a mark makes it difiicult to determine the thoroughness of the applica- 

 tion. It is believed that in most cases of failure to secure good results from 

 oil spraying, the cause may be attributed to the failure of the operator to 

 wet the tree completely with the spraj'. That miscible oil at the proper 

 strengtli will kill every scale with which it comes in contact is clearly demon- 

 strated by the experiment in dipping nursery stock. No injury to the tree has 

 been observed in any of the experiments, while, on the contrary, a decided 

 benefit from the fungicidal properties of the various miscible oils has been 

 aitparent. . . . 



" The most important factor in the home manufacture of miscible oil is the 

 securing of the proL)er materials for the purpose. As a rule they can not be 

 obtained from the local dealer and must be purchased directly from the 

 producer. 



" In veiw of the difficulty in securing the proper materials and since com- 

 mercial preparations may now be obtained at a reasonable price, fruit growers 

 are advised not to make up their own miscible oil, unless they require enough 



