I N T 
249; 
■ — Extracts from Mr. Gafcoigne’s and Mr* Crab- 
tree’s letters, proving Mr. Gafcoigne to have 
been the inventor of the telefcopick fights of 
mathematical inftruments, and not the French 
- - Derham 
* A defcription of a new inftrument for taking an- 
gles * - Hadley 
— — An account of obfervations made on board the 
the Chatham Yatch Aug. 30-31, and Sept. 1, 
1732, for the trial of an inftrument for taking 
angles - - Hadley 
— The defcription and ufe of an inftrument for 
taking the latitude of a place at any given time 
of the day - - Graham 
A true copy of a paper found in the hand-writ 
ing of Sir Ifaac Newton, among the papers of 
Dr. Halley, defcribing an inftrument for ob 
ferving the moon’s diftance from the fixed ftars 
at fea - - Newton 
■ ■ — An explanation of a new inftrument made for 
meafuring lfnail angles - Dollond 
■ An account of the meteorological inftruments ufed 
at the Royal Society’s ho ufe Henry Cauendijh 
— Account of a new inftrument for meafurin 
fmall angles, called the prifmatic micrometer 
- Majkelyne 
— An account of the apparatus applied to the equa- 
torial inftrument, for correcting the errors 
arifing from the refraction in altitude Dollond 
— An account of fome new experiments in electri- 
city, with the defcription and ufe of two new 
eleCtrical inftruments - Cavallo 
Instruments (Mufica!) Account of a muftcal inftru- 
ment brought from the ifle of Amfterdam in the 
South Seas 1774, by captain Furneaux Steele 
■ See Telefcope , Microfcope , Micrometer , &c. in 
their places 
Interest. Rules for correCtjng the ufual methods of 
computing amounts and prefent values by com- 
pound as well as fimple intereft, and of ftating 
intereft accounts - IVatkim 
— Inveftigations of twenty cafes of compound in- 
terejft - - Robertfon 
Interpolations. Problems concerning interpolations 
- - - Waring, 
Intestines. A difcourfe concerning the fpiral, in- 
Tranf.S 
Abridg. 
XXX 603 
— 34S 
XXXVII 147 
VI 139 
— 34i 
— 42S 
XXXVIII450 
VIII 371 
XL1I 155 
— 129 
XLVIJI 55 1 
LXYI 37s 
LXVII 799 
LXIX 332 
LXX 15 
LXV 67 
XXIX III 
LX 5 c8 
LXIX 59 
V 2 
243 
I i 2 
