166 



cautions to protect the silk-worms we had found in our 

 cocoons, was so starthng that we contrived this year 

 to protect them still more efficiently than we had done 

 the year before. The eggs therefore were hatched and 

 the worms fed under a wooden frame work provided 

 with sliding doors and entirely covered with gaze. The 

 windows of the room itself were closed with frames 

 covered with the same material. The result was this : 



275 say 31 per cent pierced by moths. 



450 say 53 per cent, pierced by uji. 



135 say 12 (?) per cent, unpierced by either moths or uji. 

 30 say 4 per cent, double cocoons. 

 In the presence of these facts the theory that the 

 fly of the uji deposits its eggs under the epidermis of 

 the silk-worm must clearly be given op. Does then the 

 fly lai its eggs on the mulberry leaf? Is the food the 

 vehicle by which the germ of the uji find its way into 

 the silk-worm's intestinæ? ... To the kindness of a 

 correspondent, who takes a warm interest in the matter, 

 we are indebted for the following note: — »The fly of 

 the uji is the Ugimyia Sericaria (sic!) thus named by 

 Rondani « 



Dernæst omtaler ogsaa C Sasaki 1. c. p. -, en Mr. 

 G. A. Greeven, som efter ham udtaler sig saaledes i 

 Japan Times af 4. Mai 1878; »My experiments have 

 now shown me that the hatching of the Uji takes place 

 in the stomach of the caterpillar, and that it immediately 

 forces its way through the membrane of the stomach, 

 and makes a path for itself to a stigma«. 



Saaledes stod Sagen, da C. Sasaki optog den til 

 Undersøgelse (1883), og allerede det følgende Aar ind- 

 sendte han til »Nature« en kort Beretning om Resultatet 

 af sine Undersøgelser: »Udschimyia sericaria« Rond., 

 a Fly Parasit on the Silkeworm, Nat. Vol. XXX, 1884, 



