i^o ^ Tofih. 



firmiy luted. This ftop-cock is likewife of great fervice ui 

 faturating water with acid or alkaline gafes, which may be 

 effefted by luting one end of the tube k to the ftop-cock and 

 plunging the other into the fluid in the fmall veflel /, ce- 

 mented at top, and terminating in the bent funnel m\ the 

 tube b having been previoufly removed, and the lower orifice 

 of the tube D either funk to a confiderable depth in mercury, 

 or clofed with a gronnd-ftopper. The bend of the funnel in 

 may be accurately clofed by the introdu6tion of a few lines 

 of mercury. 



The application of the ftop-cock n, has enabled Mr. Davy 

 to perform fome experimerits on refpiration with confiderabl^ 

 accuracy. 



XII. Curfory V'leiu of fome of the late Difcoverles in Science, 

 [Continued from Page S«.] 



G FOSSILS. 



. A. DELUC has examined the lenticular numifmai, 

 and the belcmnite. He confiders the lenticular as the bones 

 ot a kind of fepia, Naturaliils in general confidcr it as a 

 kmd of cornu ammonis. 



He has the fame opinion refpefting the belemnite. " It 

 is extremely probable," fays he, " that this foffil has been 

 the foft bone of a fifh." 



The numifmai is found in Europe, in Egypt, in India near 

 the Ganges, and in Bengal. 



He found at Mount-Saleve a petrified buccinuni fimilar to 

 thofe found at Ermenonville. 



He obferved phollades in the columns of the temple of 

 Scrapis near Pozzuolo : they are in a part of the column, 

 raifed at prefcnt twenty-feven feet above the level of the 

 waters of the fea. He fuppofes that this temple has been 

 thrown into the fea by an earthquake ; that the phollades 

 then penetrated into the columns ; and that a new earth- 

 quake conveyed them back to the place where they now ftaud. 



Faujas has begun to give adefcriptionof the foffils found 

 in the mountain of Saint-Pierre, near Maeftricht. They 



coufilt 



