64 SILK GROWER'S GUIDE. 



he considers the following estimate as affording sufficient 

 space for a million silk-worms, or in this proportion for 

 a greater or less number. For the first age, 200 square 

 feet of surface; for the second age, 375 square feet; for 

 the third age, 875 square feet ; for the fourth age, 2,062 

 feet ; and for the fifth age, about 5900 feet of surface. 



But as the great majority of Writers, including M. 

 Bonafoux, have allowed more space than Count Dan- 

 dolo has by this account allowed, I shall consequently 

 vary my estimate. Dr. Pascalis has arrived at precisely 

 the same conclusion he has stated as from the united 

 testimony of Comte Dandolo and M. Bonafoux, that 288 

 square yards are required for two hundred thousand, and 

 12,937 feet, or 1,438 square yards for one million silk- 

 worms. 



I have put down therefore 300 yards of surface as a 

 large allowance for two hundred thousand, and 1,500 

 square yards, or 13,500 feet, for one million silk-worms. 

 And a building, or magnanerie, twenty-six feet wide, and 

 one hundred and thirteen feet long, and two stories high, 

 with double ranges of hurdles of five horizontal courses 

 in each story, will, in our serene and salubrious climate, 

 contain them all with ample space for one million. The 

 first authors are agreed that this space is sufficient, and 

 the right allowance. 



Yet if the system of successive crops is adopted, and 

 but four hundred thousand are hatched at a time, and 

 at intervals of seven days, then this same building will 

 suffice for two millions and five hundred thousand, 

 which will here find ample space during the season. 



The whole work of feeding in succession by this mode, 

 would be thus completed in seventy-five days. There 

 are varieties of mulberries which will oft renew their 

 foliage, and with no extra cultivation, will continue in a 

 state of vigorous vegetation for more than four months, 

 affording a succession of food during the whole season. 



