CONTENTS. Ir 



Cauje ofmufcular Motion. 'Its Dependence on the Will. Contractile, 

 father of Mufcles after Death. Extent of the Contraction of Muf- 

 cles. Advantage ft cm the Obliquity of certain Mufcles. Infertlon 

 of the Tendons. Force of Mufcles. 



CHAP. XXXV. page 353. 



Animal Eleftricity. 



Accidental Difcovery of M. Galvani. Animal Electricity only excited 

 by Metals. Experiments on dead Animals. Conductors and Non- 

 conductors of this Power. Expe ri?nents on the living Subjec~l.Qn 

 Earth Worms, &c. Analogy between this Power and Elefiricity. 

 Shock of the torpedo. Nervous Energy. 



CHAP. XXXVI. page 363. 



Senfation. 



Difficulty of the Subjecl. Senfation the Effect of certain Relations efta- 

 blilhed by the Creator. Objects of different Senfes. Influence of the 

 Nerves in conveying Senfations to the Brain. Tb$ Brain the Repo- 

 Jitory of Ideas. InJiinB of Animals as connected with the nervous 

 Syftem. Harmony of the Senfes. Duration offenjiblelmprejfions. 

 The Five Senfes. 



CHAP. XXXVII. page 369. 

 Touch, and its Organs. 



The moft extenjlve of the Senfes. Organs of Touch. In what Man- 

 ner it enables us to judge of the Dualities of Bodies. Young Man 

 couched by Chefelden. Remarks on his Cafe. 



CHAP. XXXVIILpage 371. 

 Tafte, and its Organs. 



The Tongue the Organ of Tafle.-Defcriplion of it.Hmvfupplied 

 nuith Nerves. Mufcles of the Tongue. How tafting is performed* 



CHAP. XXXIX. page 373. 

 Smelling, and its Organs. 



final Caufe of this Senfe.Lefs acute in Man than in fame other Ani- 

 mals. Different alfo from theirs. Defcription of ths Organs of 

 Scent. -Comparifon between this Senfe and that of Tape. 



CHAP. XL. page 375. 



Hearing, and its Organs. 



Defcription of the Ear. Admirable Structure of this Organ for con- 

 veying and echoing Sound. Manner in which the Pulfss tf Air are 

 conveyed to the Ear. ^Communication by the Eujlachian Tube. 

 Reajbn why Per/ens who liften attentively open their Mouths. 

 The Membrana Tjmpani probably ike great Injlrument of hearing. 



C -^ P. 



