XIII. OpservaTions on the Muscxes 3; and particularly on the 
Effects of their Ostique Fisres. By ALEXANDER 
Monro, M.D. F.R.S. Epin. Profeffor of Medicine, Ana- 
tomy and Surgery in the Univerfity of Edinburgh, Fellow of 
the Royal College of Phyjicians in Edinburgh, and of the 
Royal Academy of Surgery in Paris. 
[Read Fan. 7. 1793-] 
A, S it appeared to me, when I firft began, in 1759, to deliver 
in this Univerfity a public courfe of lectures on Anatomy 
and Surgery, that the ftruéture of the oblique mufcles had not 
been fufficiently examined, nor even the number of them at- 
tended to by authors, and that fome of their chief purpofes or 
effets had been entirely overlooked by them, I endeavoured 
then, and in every courfe of lectures fince that time, to direct 
very particularly the attention of ftudents to thofe fubjects. 
I BEGAN with obferving, as a material defect in the other- 
wife very accurate and elegant tables of ALB1NUs, as well as in 
the former fyftems of Vesaxius, Eusracutus, BipLoo and . 
Couper, that the tendinous membranes or apaneurofes, with 
which many mufcles, particularly of the extremities, are co- 
vered, and with which the oblique mufcles are clofely connect- 
ed, were not delineated, yet that the knowledge of thefe is not 
only of ufe in the practice of furgery, but for underftanding 
the action of the mufcles. 
I 
