mes 
92 OF THE HEART, VESSELS A; CIRCUL. &c; 
lar place could. be pointed out, at which they might be fup- 
pofed to ceafe from performing the office of veins and begin to. 
do that of arteries, — Dut the coats of their branchial veins, or 
of the branches of their aorta, feem differ as much from the 
coats of the veins which compofe their vena portarum or ve- 
nae cavae, as the coats of our aorta differ froimn thofe of our 
- venae cavae ( *). 

(*) Vide Tbe Struciure and. Phifrology of. Fishes by Ai. Mono, 
Edimb. 1785. fol. maximo c. tab. aen..45. Icones hic allegae- 
tas atque ob fumtuum moderationem omiffas Anglicae linguae 
ignarus inveniet in verfione germanica circumcifa, ab I. G, 
Schneidero cum annotationibus edita Lipfiae 1787. im 4. €; 
tab, aen. dor 


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