CONTENTS 
T O 
VOL. L V 1 1. 
I. A Monftrous human Foetus , having neither Head, 
Hearty Lungs , Stomach , Spleen , Pancreas , 
Liver , tfor Kidneys. By Claude Nicholas Le Cat, 
M. D. Profeffor a?id Demonflrator Royal in Ana- 
tomy and Surgery, perpetual Secretary to the Aca- 
demy of Sciences at Rouen, F. R. S. &c. Lranf- 
lated from the French, by Michael Underwood, 
Surgeon to the Britilh Lying-in HoJ'pital in Lon- 
don. P* i. 
II. A Letter to Dr. Watfon, F.R. S. containing a 
Defcription of three Sub/lances jnentioned by the Ara- 
bian Phyficians , in a Paper fent from Aleppo, and 
tranflated from the xArabic, by Mr. J. Channing, 
Apothecary. p. 2 1 . 
III. A general Invefligation of the Nature of the 
Curve , formed by the Shade of a prolate Spheroid , ■ 
upon a Plane funding at right Angles to the Axis of 
the Shadow , in a Letter to the Royal Society , by ■ 
Mr. George Witchell, F\ R. S, p. 28. 
IV. An 
