64 Mr. Murray on the Culture of the Silk Worm. 



Management of the Silk Worms, produced from Jive Ounces 

 of Ova — continued. 



Fifth Period 

 Fourth Period 

 Third Period 

 Second Period 

 First Period 



Leaves devoured 



Total 



5421 



For each ounce of ova, 1084 lbs. of leaves have been taken from the tree. 



The silk worms, from five ounces of ova, have consumed the above 5421 lbs. 

 of leaves, and each produced 401 lbs. of coccoons, &c. 



For each pound of coccoons there have been consumed about 1 3£ lbs. of mul- 

 berry leaves. 



The Temperature required for the Production of the Silk 

 Worms from the Ova, anterior to %3d May, 1814. 



The external temperature was ascertained at 5 o'clock every 

 morning, from a western exposure. 



During the thirteen days in which the silk-worms were 

 developed from the ova, 134 lbs. of food were consumed. 

 The lb. of 28 ounces is to be understood, or 2 lbs. Troy equi- 

 valent to 0.7625 kilogrammes of France. 



