TKELIMTXARY NOTE <^X THE STLK (iLAXDS OF F.OMBYX MORI. 03 



10) Cautions mtartirtmont .•^hows that the silk-produoins: surface of tlic silk 

 ghnuls is absolutely smaller in Japanese races than in European ; however, considered 

 in j)roportion to tlieir body-weight, it is much o-reater in the former races as 

 compared with the latter. This fact is seen in an excellent parallel with the 

 results by the physiological experiment undertaken in the Tokyo Sericultural Insti- 

 tute : tliis experiment shows that the European silkworms are, for a given quantity 

 of mulberry-leaf supply, much inferior to the Japanese in resjiect to the cocoon- and 

 silk-prod nction . 



Afv work is not closed, but is being carried on and extended to the silk glands 

 of s(»me other silk-producing insects, which are nearly allied to Bombyx mori. The 

 complete work will soon appear in a future paper. 



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