REARING SILKWORMS. 83 



dred eggs, and these hatched out more than four 

 hundred perfect worms, that spun over four 

 hundred perfect cocoons. From these cocoons I 

 selected 150, 75 males and 75 females. They 

 (the millers) were duly coupled after emerging 

 from their cocoons. The females laid, as nearly 

 as I could estimate, twenty thousand eggs, which 

 I sold for two dollars. 



If the whole brood had been left for breeding, 

 the cash returns would have been nearly six 

 dollars from one pair. 



Note 10. 



Some cocoons raised at Point Loma, San Diego 

 County, in A. D. 1901, reeled off 1,176 yards of 

 silk fiber to the cocoon. 



Note 11. 



Two and a half pounds of raw silk will make 

 480 spools of No. A silk, at 5 cents each; that 

 would be $24. At 10 cents each, of course, 

 double that, or $48. 



One acre of good mulberry grove will produce 

 about 70 to 110 pounds of reeled silk. Made 

 into spools at the above price, it would bring 

 $2,640. 



Note 12. 



Our United States cocoons measure more than 

 any foreign cocoons yet recorded. 



