

me NPR Ne eas 
VOL. LAXIV: Part. Tf, 
XIX. O* the remarkable Appearances at the Polar Regions of 
the Planet Mars, the Inclination of its Axis, the Pofi- 
tion of its Poles, and its fpheroidical Figure; with a few 
Hints relating to its real Diameter and Atmofphere. By Wile 
liam Herfchel, E/g. F. R.S. page 233 
XX. 4 Defeription of the Teeth of the Anarrhichas Lupus 
Linnzi, and of thofe of the Chetodon nigricans of the fame 
Author; to which is added, an Attempt to prove that the 
Teeth of cartilaginous Fifbes are perpetually renewed. By Mr. 
William Andre, Surgeon; communicated by Sir Jofeph Banks, 
Bart. P. R. S. p+ 274. 
XXI. Abftrad of a Regifier of the Barometer, Thermometer, and 
‘Rain, at Lyndon, m Rutland, 1783. By Thomas Barker, 
E/q; communicated by Thomas White, E/7. F. R.S. p. 283 
XXII. 
