[ 868 ] 
fyecies yet undifcovered, p. 13, 16. Never deiefted in the aft cf copulation, p. 16.18. 
Their fecundation is by an impregnation from the males, p. 17, 18. 20. Drones 
have fome refemblances to the male organs of generation, p. 18. The different fexes 
that conftitute the republic of bees, p. 19. Concerning the fex of the working- 
bees, p. 19, 20. Drones difcovered as fmall as common bees, p. 21. 2 5. Drones 
well furnilhed with feminal liquor, and fecundating organs, p. 22. Naturaliffs who 
rejeft the ufe of drones in the propagation of bees had no knowledge of thofe fmall 
ones, ibid. An experiment proving that the eggs of the queen-bee arc fecundated 
by the males, p. 22, 23. How they are impregnated, ibid. Another experiment in 
proof thereof, p. 24, 23. Drones have no fting, p. 25, 26. A third experiment, in 
which the fvvarm was entirely cleared of the males, and in which the eggs of the 
queen-bee produced nothing, p. 26. Bees all quit their hive on being difappointed 
of their young, ibid. They attempt to enter the hive of another fwarm, and the 
queen is fiain in the engagement, p. 26, 27. The great defire of perpetuating their 
{pecies probably induces them to go to the other hive in fearch of males, p. 27. A 
fourth experiment, (hewing that the male-bees muff impregnate the eggs to produce 
young ones, p.27,28. Queen-bees produced from the common eggs, p. 28 — 30. 
The working-bees have the power of making a queen of any worm in the hive, 
p. 3 o, 31. The received opinion that the queen-bees are produced from a particu- 
lar kind of egg, erroneous, p. 31. What advantages may accrue to the public from 
thefe obfervations, p. 31, 32. 
Benares, an account of the Bramins obfervatory there, p. 398. See Bramins * Ob/erva - 
tory . 
Benedict, a mine in the Hartz ; its depth determined by barometrical obfervations, 
p.408—412. 43$. 
Bengal , govornor of, grants a peace to the Boutaners, p. 46S. Enters into a treaty of 
commerce with them* p. 469. Tranllation of the letter he received from the Tayihoo 
Lama, p. 489 — 492. 
Bi/on. The North American Bifon, the fame as the great buffaloe in the Wilds of 
Africa, p. 40. 
Bodies. A new theory of the rotatory motion of bodies affefted by forces dilturbing 
fuch motion, p. 269 — 295, Singulur method of bellowing dead-bodies among the 
Thibetians, p. 478. 
Bogle (Mr.) fent to the court of Thibet, to negotiate a treaty of commerce with the 
Boutaners, p, 469. His defcription of their country, &c. p. 469- — 472. And cha- - 
rafter of the Tayihoo Lama, p. 479. 
Boiling point, experiments to determine it in thermometers, p. 818 — 833. Rules to be 
obferved in adjufling the boiling point of thermometers, p. 843 — 853. 
Bofco'vich , Abbe, his account of a new micrometer and megameter, p. 789 — 79S. 
812= — 815.., 
Bottle 
