494 



WE 1 



WHE 



perceive by its heat, whether it 

 contains many of these insects, 

 which generally lie pretty much 

 collected ; and the particular places 

 where they are most numerous, 

 feel mucli warmer than the rest. 



This observation led M. Duha- 

 mel to think, that a considerable 

 heat is probably necessary for the 

 hatching of their eggs ; and that in 

 this case, even if they should live, 

 Ihey will not be able to breed in 

 his ventilating granaries. 



To prove this he made repeated 

 experiments, the results of which 

 made it evident that this insect 

 cannot multiply in corn that retains 

 a proper degree of coolness, which 

 it may be made to do by frequent 

 ventilating. When corn is sifted 

 in a sieve tine enough to retain the 

 grain, the weevils then agitated 

 shrink up their legs, and are in 

 that posture so much smaller than 

 the grain, that most of them drop 

 through the sieve. 



But of all the methods M. Du- 

 hamel tried, that which he prefer- 

 red was, to dry the corn on a stove, 

 or oven, heated to eighty or ninety 

 degrees of M. de Reaumur's ther- 

 mometer. See Insect. 



WEIGHT OF CATTLE, hi 

 the Picture of London, for the pre- 

 sent year, it is stated, that about 

 the year 1700, the average weight 

 of oxen killed for the London mar- 

 ket, was 370 pounds ; of calves, 50 

 pounds; of sheep, 28 pounds; and 

 of iambs, 1 8 pounds. The average 

 weight at present is — of oxen, 800 

 pounds; calves, 140 pounds; sheep, 

 80 pounds; and lambs, 50 pounds. 

 The whole value of butcher's 

 moat, as sold in Smithfield, is about 

 eight millions sterling. 



WHEAT, Triticum, the most 

 useful of all farinaceous plants, the 

 seeds of which are the best grain 

 for bread. 



The different species of wheat, 

 according to Mr. Miller, are, the 

 winter wheat, without awns, or 

 beards ; the summer, or spring 

 wheat ; grey pollard, or duck bill 

 wheat, with long beards ; the coue 

 wheat, so named for the shape of 

 the ears, which resemble a cone ; 

 and the polonian wheat. Other 

 kinds he supposes to be only varie- 

 ties occasioned by culture and soil. 



The Smyrna wheat is very dif- 

 ferent from all other, producing 

 one large central ear, and several 

 smaller lateral ones from the bot- 

 tom of the large one. This suits 

 a rich and strong soil, as there is 

 no danger of its being over fed. It 

 seems to be belter adapted than 

 any other species of wheat to the 

 horse-hoeing husbandry. 



The only species or varieties 

 that are cultivated in this country 

 are, the winter and spring wheat, 

 the bald and bearded, the red and 

 white, and the Siberian wheat, 

 which is bald, or without awns. 



About a bushel and a half of 

 seed is a sufficient quantity for an 

 acre. Oftentimes it produces very 

 large crops from a less quantity. 

 The larger and fuller the seed is, 

 the greater quantity by measure 

 will be required ; the smaller, the 

 less quantity : For the number of 

 grains is to be regarded more than 

 the measure, or weight. 



Changing the seed yearly, or at 

 least every other year, is proper, 

 or even necessary : For it has al- 

 ways been experienced, that the 



