Scientific News. 4t6 



Tlie different kinds of oxen are in fome meafure fuitcd to tht- foil. — ^Upon the NojIoi; 

 farm, which is a hght foil, the Devonfhire fort are tiled ; upon the Flciuifh farm, wheig 

 the foil is ftrong and heavy, the Hcrtforddiive ; and in the Park, where the buhnefs is 

 carting, harrowing, and rolling, the Glamorganlhire. — They are all excellent in th«fie 

 different ftations. 



It may not be improper to mention a very fimplc method which has been dlfcovered' 

 of firft training them to the collar, which is nothing more than putting a bioad lliaj* 

 round their necks, and faftenitig one end of a cord to it, and the other to a l.iige log o^ 

 ■wood, and letting the ox draw it about as he feeds in his palhne for three or, . ^o}Jr ■ djjjf^ 

 before he is put into harnefs, by which means he is very much brought forward in 

 docility. 



.• I have before obfisrved that 20 per cent may be confidered as the average profit of ^n 

 ox, ftating them to be bought in at lol. and allowing them to fell for 25!. taking off lol.; 

 for the two years they are not worked: but laft year beans being of very little va. 

 lue, they were kept longer than uliial by being ftall-fed with bean ineal, whjch aaiwerei 

 v.-ry well as they were brought to an average ot nearly 30!. and one of them, a Gla. 

 morganlhire ox, originally bought for 81. and from his co'npa6l, round make, always 

 called the little ox, thrived to fuch a furjinzing degree that he became too fat to be able 

 to travel to Sniithfield, and wa's therefore fold to Mr. Chariwood, a neighbouring butcher, 

 for 47I. 



(To he continued.) 



I 



SCIENTIFIC NEWS AND ACCOUNTS OF BOOKS. 



Artificial Pyrites. 



ExtraB of a Letter from a Corrtfpondent. 



F you think it worth while you may mention in your Journal an experiment I lattjT 

 made, of endeavouring to procure Pyrites in a moift way. It is about two yeais fince I 

 firft made the experiment, and only repeated it lately, to convince fome of my friends, 

 who expreffed their doubts. The experiment is this. 



I impregnated water very ftrongly with carbonic acid, and introducing fome irori 

 filings, I continued the impregnation for a day or two, and afterwards allowed the 

 water to ftand in a well corked bottle fo,i fome days, till the acid had taken up as much 

 iron as poffible. I then poured it into an aerating apparatus — threw up the hepatic gas 

 from fulphuret of polafh and fulphuric acid ; and after havmg agitated the water till.it 

 had got a good dofe of the gas, I poured the water into a large bafon ; — this was in the 

 evening, and next morning when I looked at it I found it covered with a pretty thick filin 

 of a moft beautiful variegated pyrites.— I had fo little of it, that the only proof I had 

 of its being this fubftance was, that it was ignited on its being placed on a hot poker. 



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