M A G 
the ufe oF natural ones - Canton 
«— An account of the magnetical machine, con- 
trived by the late Dr. Gowin, Knight 
Pother gill 
— Account of Dr. Knight’s method of making 
artificial load -Hones - IVilfon 
Magnet. (Declination of the) A letter concerning the 
prefent declination of the magnetic needle 
and the tides - - D. B. 
■ ■ — An obfervation concerning the dec’ination of 
the, needle made at Rome about the begin- 
ning of 1670 - - Azout 
— Letter concerning fome fuppofed altera r 
tion of the meridian line, which may affeCl 
the declination of the magnetic needle and 
the pole’s el vation - If 
— — — Obfervations on the dipping needle made 
at London 1723 - - Graham 
. Observations of the declination of the 
magnetic needle, the effects of cold, longitudr 
and latitude made at prince of Wales’s Fort, 
upon Churchill-River in Hudfon’s Bay, North* 
America - - Middleton 
» ■ - — Experiments on two dipping needles which 
were made agreeable to a plan of the reverend 
Mr. Michel 1 - - bJairne 
— — Description of a new dipping needle 
Lorimer 
— • Experiments made on the dipping needle 
by defire of the Royal Society 1775 
Hutchins 
— An account of obfervation9 on the dip- 
ping needle, made at Albany Fort, in Hudfon’s 
Bay - Hutchins 
Magnets (Experiments with) An account of fome 
magnetical experiments - Coleprejs 
* A narrative of the ftrange efie&s of thunder upon 
a magnetic card - - Anon. 
Several obfervations of the refpeCl of the needle 
to a piece of iron held perpendicular, made by 
the mailer of a fhip eroding the equinoctial 
line 1684 - - Anon . 
Letter concerning a new fort of a magnetical 
compafs, with feveral curious magnetical ex- 
periments - - De la Hire 
Part of a letter giving an account of feveral mag- 
Tranf. 
XLYII 31 
lxvi 591 : 
LXIX.51 
III 726 
V 1*184 
XXI 285 
XXXIII 332 
XL 1 I 157 
LXII 476 
LXV 79 
— 129 
LXVI 174 
II 502 
XI 647 
XV 1213 
XVI 344 
*93 
Abridg. 
II 607 
— 608 . | 
I 265 
VI 2 28 
VIII 469' 
II 180 
II 620 
netical 
