Nov. 
1791. 
Feb. 
April. 
MM ay. 
Fune. 
Auguft. 
Sept. 
SO FR Ah GE aD 
PRESENTS. 
the theory of vifion, depending on 
the different refrangibility of light; 
by Nevil Mafkelyne, aftronomer 
royal. 
Some account of the difcovery made 
by the late Mr. John Dolland, 
which led to the groand improve- 
ment of refracting telefcopes; by 
Peter Dolland. 
Accountof a new inftrument for mea- 
furing {mall angles, called the pri- 
matic micrometer, by the Revd. Dr. 
Matkelyne. 
The Anatomical Inftructor; by Mr. 
Thomas Pole Surgeon, of London. 
A Synopfis of a courfe of lectures 
on the theory and practice of me- 
dicine, by B. Waterhoufe, M. D. 
A defcriptive catalogue of ingraved 
gems, about 1500 in number. 
Ninth volume of the Tranfa¢ctions 
of the Batavian Society of expe- 
rimental Philofophy, at Rotterdam. 
Memoirs de l’Academie royale des 
Sciences de Turin, Vol. 4th. 
A curious piece of Indian-{culpture, 
fuppofed to reprefent an Indian 
woman in labour, found near 
Cumberland river, Virginia. 
Principles fur les meafures en lon- 
geur et en capacité ; par M. Bon- 
ne, of Paris. 
Syfteme des Lecons phyfiques par L’ 
Abbe Nollet. 2 Vols. 80. 
Mufichenbrook’s Philofophy, 2 Vols. 40. 
TranfaQtions of the Society for pro- 
moting Arts and Manufactures, at 
London; for 1785. 
Oo N 5. 
Donors, 
Nevil Mafkelyne, aftron. 
royal. 
The author. 
The author. 
The author. 
Francis Hopkinfon, Efg. 
Batavian Society Exper. 
Philos. at Rotterdam. 
M. De La Lande. 
Mr. Thomas Jefferfon. 
‘The author. 
Mr. John Vaughan. 
Ditto. 
Ditto. 
Memoirs 
