( 432 ) 



In cafe of the fluid to be boiled polTcfling a veiy ftrong 

 elective attradion to caloric or the matter of heat, the fpoiit 

 might be extended to the width of the diameter of the ket- 

 tle or a projeding flielf might be formed all round it, lined 

 below with wetfponges or rags. 



I remain, Dear Sir, 



Yours, &c. 



Thomas. P. Smith. 

 IMr. RoBT. Tatter SON. 



P. S. In conformity to the wiih of the fociety I procur- 

 ed a vellel of the form here propoled. 1 firft tried the ex- 

 periment with water, it boiled very rapidly, but every time 

 the water rofe into the fpout it immediately fubfided, al- 

 though the fpout had tor fome time been diredly expofed 

 to the heat of one of Lewis's furnaces : 1 afterwards at- 

 tempted it with oil, but before the oil boiled the foldering 

 oftheveiTel, which was made of tin, melted. 



An EJfa 



