458 Management and T/nprovemenf, ly T'tUage, 



diflcnded, and the fiinhi-i.-e in particular were in a conditioa 

 of high rednefs and infliimniation. Their fibres were length- 

 ened, and reached fo far as, on one fide, to embrace the 

 whole ovarium, and contain it within their inclofnre. But 

 the moft remarkable appearances were in the ovarium itlelf. 

 The fow had borne pigs before. Some of the ova were of 

 courfe exhaufted of their powers, and exhibited the appear- 

 ance common in fuch cafes. The whole ovarium was tinged 

 with blood, and apjjcarcd to have been under the operation 

 of a powerful ftimulus. The entire fubfiance Itemed to have 

 been enlarged. The ova partook of this enlargement, and all 

 of them had evidently (harcd in the excitement and fuffufion. 

 Some of them were hut little fwelled : fome were fo tumid as 

 to be on the point of burfting : the membrane of others was 

 ruptured, and the contents partly protruded ; and, in feveral, 

 the fubdance difchargcd from the broken ovum Was fairly 

 within the grafp of the fimbriae. I imagined now I had be- 

 fore me proof lufticient to determine the derivation of the 

 foetus from the mother. I accordingly examined the portions 

 of fubftance difchartied frdm one ovum, and extrafted from 

 others, with all poffible care. But inftead of finding an em- 

 bryo, or any thing like the rudiment of a young animal, the 

 little mafles I had obtained refemhied coagulated blood more 

 than any thing to which I can compare them, and appeared 

 to have no n)ore of organization or figure than is frequently 

 feen in grumes or clots of that fluid. 



XLVIT. Ow the Management and Improvement^ hy Tillage, 

 of old Grajs hands on a dtreti Clay, Juch as is found in 

 the IVilds of Surrey and i^ujj'ex *. 



T, 



HE fubftratum to this foil being impervious to water, 

 the furface mu(t confequenlly be conunualiv faturatcd with 

 moifture. Many landlords on fuch foils reftrift their te- 

 nants, by covenants, not to till or ploufh uj) the old grafs 

 lands, under an apprehenfion of the foil being exhaufted by 

 tillage and cropping. In this unproduftive Itate the land 

 lets for from five (hillings to ieven fliillings and fixpence an 

 acre; and, being always full of llagnant water, the produce 

 confifts of poifonous weeds, water quitch, and a lillie four 

 grafs. Two acres will keep one head of lean cattle alive for 



* From Mr. Clofe's Paper in the Communications to the Board of .'^gri- 

 ciilturt, vol. iii.''patt i. We gnvc a iormcr part of this paper in our laft 

 Mumber, p. 167. 

 , twenty 



