' [ ] 
Arlington Knoll , its latitude, longitude, &c. p. 232. Refra&ion on the di {lance between 
Allington Knoll and Tenterden, p. 241. 
Analytical experiments on a mineral from Sydney Cove in New South Wales, p. 307. 
See Mineral . 
Angles . Excefs of the angles of fpherical above thofe of plane triangles, p. 168. On 
the difference between horizontal angles on a fphere and fpheroid, p. 192. 
Animal hepatic air. See Air . 
Animal fubflances, upon their firfl putrefadlion, do not effervefee with acids; but, after 
an experiment has continued for fome time; a manifefl eftervelcence takes place; 
which effedlt again difappears before the putrefaction ceafes, p. 392. Putrid animal 
fubflances frequently abound with volatile alkali, p. 398. 
Animals , the mufcular fibres of, contain fixed and phlogifticated airs, the inflammable 
principle in the flate of heavy and light inflammable airs, and a fubfiance which, by 
means of heat or putrefa&ion, is capable of being converted into animal hepatic air, 
p. 422. 
Ants . Obfervations on the fugar ants, p. 346. Called Sugar Ants from their ruinous 
effefls on the fugar cane, ib. Thefe ants firfl made their appearance in Grenada about 
the year 1770, ib. Sugar ants fpread rapidly in Grenada, and deflroyed every fugar 
plantation between St. George’s and St. John’s, ib. Colonies of fugar ants difeovered 
at Dtiquefne and Calavini, in Grenada, ib. The legiflature of Grenada offer 
20,000 1. for the difeovery of a method to deflroy them, p. 347. Sugar ants not 
only deflrudtive to the fugar cane, but to feveral forts of trees, as lime, lemon, orange, 
&c. ib. Thefe ants, when applied to the tongue, have a very acid tafte; and, if a 
number of them be rubbed between the palms of the hands, they emit a flrong 
vitriolic fulphureous fmell, ib. Their nelts univerfally contlructed among the roots 
of particular plants and trees, as the fugar cane, lime, lemon, and orange-trees, p. 
348. Myriads of them deflroyed by means of arfenic and corrofive fublimate mixed 
with animal fubflances, ib. Great quantities of them deflroyed by fire , ib. Thefe ants 
entirely deflroyed by the hurricane in 1780, which proved fo deflrudlive to the other 
*|Wefl India iflands, p. 350. They make their nefls, or cells, for the reception of 
their eggs, only under or among the roots of fuch plants or trees as are not only 
capable of protecting them from heavy rains, but are, at the fame time, fo firm in the 
ground as to afford a fecure bafis to fupport them againfl any injury cccafioned by the 
agitation of the ufual winds, ib. Sugar ants do not feed on any part of the canes or 
trees affe&ed by them, p. 332. Sugar ants carnivorous, ib. When large carcafes 
became putrid, fo that their parts could be eafily feparated, the fugar ants quickly car- 
ried them away, ib. Scarcely to be kept from fores, ib. Deflroyed all other vermin, 
particularly rats, ib. No conveniency on cotton plantations for the nelts of fugar ants, 
P* 353 * Deflroyed by the hurricane in 1780, p. 354. 
Appendix, containing Remarks on Major-General Roy’s Account of the Trigonometrical 
Operation, p. 393. 
Arches 8 
