ALT 
A MB 
J 5 
XXXVIII167 
XL 41 3 
XL 417 
LXVI 92 
— — Account of a fpirit-level to be fixed to a quadrant 
for taking a meridional altitude at fea, when 
the horizon is not vifible - Hadley 
» ■— A defcription of a water-level to be fixed to Da 
vis’s quadrant for taking the fun’s altitude at 
fea in thick and hazy weather without an ho- 
rizon - - Leigh 
- The defcription and ufe of an apparatus, added 
as an improvement to Davis’s quadrant, con 
lifting of a mercurial level, for taking the co-al- 
titude of fun or liar at fea, without the ufual 
afiiftance of the fenfible horizon, which fre- 
quently is obfcured - Leigh 
- A new method of finding time by equal alti 
tudes - - Aubert 
- An account of the apparatus applied to the equa- 
torial inftrument, for correcting the errors arif- 
ing from the refradlion in altitude Dollond LXIX 332 
Amalgam. On the ufe of an amalgam of zinc 
for the purpofe of eledtricai excitation 
- Higgins 
Amand (St). Mineral Waters. Letter concern- 
ing the mineral waters of St* Amand, near 
Tournay and Valenciennes - Geoffry 
Ambe. The ambe of Hippocrates, for reducing luxa 
tions of the arm with the fhoulder, rectified 
M . U Cat 
Amber. Account of a curious piece of Hevelius 
- An obfervation about white arnber Kirkb > 
A compendious hiftory and demonftration of the 
Pruftian- amber - Hartmann 
An account of feveral curiofities relating to am- 
ber - - Hartmann 
- A Treatife on amber - Cameli 
Experiments on the luminous qualities of am- 
ber, diamonds, and gumlac 
Wall 
An obfervation of a piece of amber with a leaf 
of a plant imprtlTed on it - Breynius 
— An eXtradt from a letter on the nature of amber 
- Beurer 
— Extradl from an eftay on the origin of amber 
- - Fotbergill 
Ambergrease.. Letter concerning ambergreafe, and 
its being a vegetable production Boyle 
- An account of a great piece of ambergreafe, 
thrown on the ifland of Jamaica Tredway 
Tranf. 
LX VIII 86 
XX 430 
XLII 387 
V 2061 
VII 4069 
XXI C 
— 49 
XXIV 1591 
Found in whales 
3 
XXVI 69 
XXXIV 154 
XLII 322 
XLIII 21 
VIII 6n 3 
XIX 711 
Abridg. 
VIII 357 
— 360 
— 36a 
II 334 
IX 257 
II 490 
— 491 
— 473 
IV 2 
VI 2 
VIII ' 
■%^ro|xxxiii' 
‘93 
VII 423 
An. 
