470 O F G R A N A R I E S. Part IV. 



hitlierta fallen in our way, principles of which we think we have de- 

 nionflrated the certainty and the utility, and which we could wiUi to 

 fee adopted by greater numbers of people. 



Experiments on the prefervation of corn, (^j M. Vandusfel. 



|N the beginning of September 1754, M. Vandusfel filled one of 

 ■^ M. Duhamel's granaries of prefervation, feven feet fquare and fix 

 feet deep, with good wheat not dried. It heated a little at the end 

 of eight days; but two men, with a fmall double ventilator, cooled 

 it in two hours time. It began to heat again about a week after, when 

 he repeated the fame operation, which cooled it prefently; and on the 

 20th of October it was quite cool, tho' it had not been ventilated for 

 fifteen days. 



M. Vandusfel, in a letter to M. Duhamel, dated the 14th of Oc- 

 tober, 1756, tells him, that his corn ftill continued in the fame good 

 condition. He adds, that in Auguft 1756, he filled a fmall granary 

 with dried corn, which had kept perfedly well to the time of his 

 writing, without being ventilated at all. Corn of the year 1754 and 

 1755, not dried, but only ventilated, had likewife kept as well as 

 could be wifhed: and a parcel of corn which he dried and put into 

 cafks, remained fix months in them, without being ventilated, and 

 was perfedly found at the end of that time. However, he obferves, 

 that both dried and undricd corn, if fuffered to remain a month 

 without being ventilated, contracfts a difagreeable fmell, which is 

 perceived when the bellows firft begin to work, but is entirely difli- 

 pated in a few minutes. This fmell is not a fymptom of corruption 

 or decay, but only a ftrong fmell of corn, fuch as is always perceived 

 on entering into a granary that has been fhut for any length of 

 time. 



CHAP. 



