[ 488 ] 
Ambergrife , an account of, by Dr. Schwediawer, p. 226. Properly called Grey 
Amber', account of the natural and that in the ihops, ibid. p. 227. Places where 
found, p. 227. Beaks of the Sepia Odtopodia, or Cuttle-fifn (midaken for claws or 
beaks of birds, &c.) conflantly found in it, p. 228. accounted for, p.236, 237. See 
Spermaceti Whale. Fafls tending to determine its origin and nature, p.229. Quef- 
tions neceflhry to be anfwered before its origin can be determined with certainty, ibid, 
p. 230. The fpermaceti whale, or Phyfeter Macrocephalus Linnaei, the only fpecies 
of whale in which ambergrife is found, p. 230. 240. Symptoms by which it may 
be judged whether the whale has ambergrife in it, p. 231. Manner of taking it out, 
and in what part it is frtuated, p. 232. Changes by degrees its confidence, colour, 
and fmell, on being expofed to the air, ibid. 235. Found in the voided faces of the 
whale, p. 233. Clufius’ and Dudley’s accounts of it quite wrong, ibid. Is found in 
females, but not in fuch large pieces, or of fo good a quality as in males, p. 234. 
236. Kxmpfer’s account comes neared the truth, ibid. Enquiry whether it is gene- 
rated in the bowels of the whale, or whether it is taken in with the food, p. 233. 
That found in whales is not of an inferior quality, or lefs in price, than that found 
upon the fea-coad, ibid. Is generated in the bowels of the Spermaceti whale, p, 
237. Chemical obje&ions anfwered, p. 238. Caufe of ambergrife being fo often 
adulterated, p. 239. Its ufe in Europe, ibid. And in Afiaand Africa, p. 240. 
Arijloile , faid to be the fird obferver of the lunar Iris, faw but two in fifty years, 
p. 102. 
Attraction of cobefion. See Mineral Acids. 
B, x . 
Bagnara. See Earthquakes. 
Bambaras, who, p. 89. See Mandingas. 
Barker, Thomas, Efq. See Rain. 
Barometer. See Rain. 
Barrah , kingdom of, how fituated, p. 90. 
Batchereeu See Galam. 
Belidor. See Rcjtftance of the Air. 
Bergman. See Mineral Acids. 
Bicker , Dr. Lambert. See Sfeickfilvcr. 
Black , Dr. See SpuickfiRver , Heat. 
Blacks , in Africa, very apt to call themfelves older than they really are, and why, p. 
88. Ignorance and fuperdition of thofe about Senegal and Gambia, p. 90. 
Black Canker Caterpillar , account of that which dedroys the turnips in Norfolk, by 
William Marihall, Efq. p. 217. The turnip crop is the baits of the Norfolk 
hufbandry, ibid. Great damage done by the Black Canker Caterpillar in fome fea- 
fbns, p. 218. Appearance of the yellow By, from which the canker is fuppofed to 
be 
