1MB t j| S ^£4HNTIF,JC »NEWS»ro 



tp cover the pot in. ytWich the butter is kept very exa&Jv, and 

 to piacc il in a cold expofure, fucli as a cellar. By this treat- 

 ment batter may be kept foj> fix months or more, and will be 

 nearly as good as frefli butter,. particularly alter the top is taken 

 off. it is even poiiible to give this fujjed butler to a certain 

 point the appearance or frefh butter, by beating it with one 

 iixth part or its weight of the cheefy matter ; and fo likewife 

 rancid butter may be confiderably amended by the procefs of 

 iuiion and cooling here prefcribed. 



.:^.t 1 km 



SCIENTIFIC NEWS. 

 Temperature of the Sea. 



General farts 'i-V-lR. PIRON has lately communicated to the French Na- 

 rcipefting the tional Inflitute a memoir on the temperature of the fea : an in- 



temperature of ■' m-ll) T1EV l >s J > • 



the fea. terelting lubject, capable ot bctng applied to -various menu 



purpofes, and which has accordingly engaged the attention of 

 a coniiderable number of philofophical obfervers. His ge- 

 neral facls are, I. The mean temperature of the fea at its fur- 

 face is commonly more elevated than that of the air. 2* It \s 

 higher the nearer to the continents and large iliands. 3. At a 

 diltance from the (bore in deep feas the water is colder below 

 than at its ftirfaee ; and the more the greater the depth. All 

 ithe obfervations feem to (hew, that in the abyifesof the ocean, 

 as well as on the fummits of mountains, even under the equa- 

 te great depths tor > eternal froft prevails. 4. A fimilar cold is obferved in 

 : c ernaliy exten.five lakes, and. even within the earth at great depths, but 

 it appears to be lefsfudden. 5. Theie refults concur in proving, 

 that the temperature within the earth is not every where the 

 fame and equal to 931°, as has been long thought (about 50* 

 Fajir, whether this be centigrade or Reaumur's fcale.) **^-. 



Spent Oil of the Curriers. 

 Concerning the The procefs by which the carriers impregnate their fkins is 

 pounds u°fed"in -•>* by ^ mear ' n g lne oil upon the wet iltin, into which it pene- 



currying leather, trates as the moifture evaporates. A pure oil could not perhaps 

 ■ :'v be 



