■ 21^ APPARATUS FOR RAISING WATER IN WORM TUBS. 



commended by the above ingenious gentleman. But I muft 



beg leave to obferve that this, which in your Journal is deno-r 



minated " a new method, by a jar, the cover of which fits 



into a groove with hog's laid," is in reality a very old method • 



Was ufed by for in the quarto edition of BufTon, publiflied at Paris in 1749, 



Buffonj Tome III. p. 192, you will find many fach vefTels reprefented, 



and Fig. 4, is precifely the feme as the one given in your work. 



But BufFon was not the inventor of this method, for it is 



and by Le Cat J claimed by the celebrated Mr. Le Cat, who had glaflfes mad^ 



upon this conftrudion about the year 1739, and in 1748 fent 



to the Royal Society a defcription^ which, with an engraving, 



may be feen in the 46lh volume of the Philofophical Tranf- 



adions, page 6. 



rd before all by But even the celebrated Mr. Le Cat was not the inventor, 



Glauber. £qj. qJ^ Glauber employed this method long before, and a 



plate and defcription may be feen by any one who will take the 



trouble to confult his " Fomacum Philofophicariim, pars qidnta,'' 



page 13, &c. &c. publiflied at Amflerdam in 1661. The 



only difference is, that Glauber ufed quickfilver to fill th.e 



groove; Mr. Le Cat employed quickfilver or oil; and Mr. 



Carlifle recommends hog's lard. If you think thefe remarks 



worthy of a place in the next number of your Journal, they 



are much at your fervice; from an 



OLD CORRESPONDENT. 



XII. 



Account of an Experiment for fuppli/ing Worm Tubs and other 

 Jlefrigeratories by the uffifiant Prefjure of the Atmofphere, ivhich 

 proved unfiiccefsful, on a large Scale ; to xvhich is added an Im- 

 provement for extending the iifeful Applications of the Syphon. 

 By Edward Howard, Esq. P\ R. S. In a Letter to the 

 Editor. 



To Mr. NICHOLSON. 

 SIR, 



Apparatus for JL HE method of fupplying worm tubs and condenfers, given 

 more eafiiy f^y Sir Alexander Edelcrantz in your laft number, induces me 



ra'ifit,; ater in -^ ■ , , /- , / r r ,■ ■, 



worm 'lbs, by to trouble you with the relult of an unluccelsful experiment, 

 atmofp: eric which I fome time fince made on much the fame principle, 

 preffure. ^^^ 



