On the Mater'uility of Heaf. 45 



the frontal mufcles, thofe of the eye-lids, the face, the lower 

 jaw, and the tongue ; when they beheld the convulfions of 

 the mufcles of the arms, the bieaft, and of the back, which 

 raifed the trunk fome inches from the table ; the contra6lioni 

 of the peftoral mufcles, and the exterior and interior iater- 

 coftal mufcles, which diminifhed the intervals between ail 

 the ribs, and made them approach each other with violence, 

 raifing the inferior ones towards the fuperior, and the latter 

 towards the firft rib and the clavicle ; tlie contraftions of the 

 arms, which, when the uncovered biceps mufcle was touched, 

 ■ as well as its tendon, were fo fpcedy and violent, that com- 

 plete flexion of the fore- arm on the arm took place, and that 

 the Hand raifed weights of fome pounds fifty minutes aftter 

 dccaj)itation. Similar experiments may be feen in the work 

 of Aldini: our object in this report was merely to fpeak of 

 the Galvanic Influence on the heart and arteries of man, 

 vvliich had not yet been obferved. 



Thefe new and important refults, which we obtained in 

 regard to the heart and arteries of man, will be confirmed by 

 other trials. We ftiall repeat our experiments as foon as au 

 opportunity occurs, and we (hall take care to give you an 

 early account of the moft remarkable obfervalions we fhall 

 make. 



Vllf. A Review of fome Experiments ivhich have been fup- 

 pofed to difpro-ve the Materiality of Heat. Bj William 

 Henry *. 



X H E following remarks on the fubjeiSl of heat were writ- 

 ten foou after the publication of Count Rumford's Inquiry 

 concerning the Source of the- Heat evolved by Friction ; and 

 of tlie iutereftlng Effays of Mr. Davy, which appeared in 

 Dr. Beddoes's Weft Country Contributions. They were 

 tranfmlited to Dr. Beddoes, for publication, about the clofe 

 of the year 1799; but circumliances, with which I am un- 

 acquainted, liave, I believe, induced the dodor to decline 

 the continuation of his periodical work. Thefe circum- 

 ftances I deem it necefl'ary to (laic; becaufe, had the ellav 

 been written nearer the period of its publication, it would 

 probably have al)umed a very different form. At pret'ent, I 

 have not leifure to review the fubjcft, or to attempt any ma- 

 terial alteration ; and ftlH lefs to examine whether 1 have 

 hren anticipated by any of the authors whofe cllayr. have 

 been publKhcd during the two lall years. 



" I'rom die Manckejler Society's TrunJlUliow, vol. v. part 2. 



A Revieu.' 



