464 O F G R A N A R I E S. Part iV. 



" wheat. It wafted but two ounces and an half, by the firft twa 

 " hours ventilation ; two ounces and five drachms in the fecond two 

 " hours, viz. from eight to ten j in the next fix hours, viz. from 

 " ten to four in the afternoon, it wafted, at the rate of four ounces 

 " every two hours ; from four to fix, two ounces and an half; apd 

 *♦ from fix to eight, one ounce and an half: in all, about twenty 

 *' ounces : fome allowance being made for what corn was wafted by 

 *' handling and biting fome of it from time to time. It was venti^ 

 " lated in thefe fourteen hours with about forty thoufand gallons of 

 " air, which pafled upwards through it, and made it fufficiently 

 •' hard and dry, fo as to be fit for grinding : it was well coloured, 

 ** and handled well ; and, from ftinking, as fmutty wheat does, 

 " it became much fweeter. The vifible dewy moifture was blown 

 " off in three hours-; but it continued damp and cold to the feeling 

 ** till two o'clock, when fome little duft began to fly oft' it. 



" And whereas it wafted off much lefs moifture during the firil 

 ** four hours ventilation, when it ought to have wafted the moft, 

 " on account of its being then wetteft, this was owing to the foggy 

 " hazinefs of the morning: which as it went off, and broke out 

 " into fine warm fun-fhine, towards ten o'clock, fo the air bein's 

 " thereby become dry, it imbibed moifture more ftrongly from- the 

 " corn : and that this was the true caufe of the difterence, is far- 

 *• ther confirmed by a like experiment which I had before made on 

 " a gallon of wheat, April the firft, there being thea a very dry 

 " north-eaft wind, 



. *' It will be advifiible to begin to ventilate corn as foon as pof- 

 •" fible after wafhing it, that the moifture may have the lefs time 

 " to foak in : for the lefs the moifture foaks in, fo much the foonec 

 '^* the corn will dry. 



" If the moifture is fo eafily carried oft^ from wet wheat, by 

 '♦ventilation, this method will doubtlefs much improve what is 

 " called cold wheat, viz. fuch as is grown, and lias been houfed 

 ♦' in a cold -wet feafon ; and will therefore foon carry off" the moift 

 ♦* vapours which arife from corn, and caufe it to heat and <^row 

 *' mufty." "" 



Of the Moth, or Worm. 



TN all our experiments, fays M. Duhamel, we have never fuft'ered 



-■• any thing by moth or weevil, though the common granaries werd 



greatly infefted-witk them at the fame time. This is a good prog- 



" ' noftic : 



