riments. on oil of vitriol and thofe of Mr. Homberg accounted for, p. 31. Expe- 
riments on the acetous acid, p. 32. Deduftions from thofe experiments, p. 3 3 „ 
Experiments on the fpecific gravity of fixed air in its fixed date, p. 35. Experiments 
on fixed vegetable alkali, p. 38. Refult of thefe experiments, ibid. Table of the 
contents of a folution of mild vegetable alkali, according to its fpecific gravity, p, 
40, See Chymlcal Affinities, Morns eau.. 
Jfleinius. The difference between his account of the cirri of the Ophidium and Wil-v 
loughby’s reconciled, p. 437* 
L. 
Lac. See Kerr. 
Lightning. See Brereton , Adair . 
Lind, , Dr. See Norris . 
Lloyd, John, Efq. his account of an earthquake at Hafodunos near Denbigh, p. .jju 
Luckipcuer. Tragical event there, 105. 
Luminous appearance in the heavens* See Cavallo. 
Marine acid. See Kirnmn. 
Mars . How to determine his rotation with great exa&nefs, p. x 19. See Herfchel. 
Mar/dcn, William, Efq. his account of a phenomenon obferved upon the ifiand of- 
Sumatra, p. 383. See Fi/h. 
Marjham , Robert, Efq. his farther account of the ufefulnefs of walhing the Hems of 
trees, p.449. That ufefulnefs proved by obfervations on walhed.and unwafhcd 
beaches and oaks, ibid. Experiment made on the roots of trees with pond-mud, p„ 
45c. Young trees are reafonably expe&edto increafe more. than old, ibid. The annual 
increafe of very old trees hardly meafurable withaftring, and why, p. 431. See 
Oak. All the ingredients of the united vegetation, received from the roots, Items, 
branches, and leaves, of a mofiy and dirty tree, do not produce-half the increafe 
that another gains whofe item is clean to the head only, p.452. Caufe of shat 
increafe confidered, ibid. Obfervations on his firft wafhed beech, ibid. . 
Megna . A river which falls into the Burrampooter, to which it communicates its name 
for the reft of its courfe, p. 100. Prodigious body of water produced by itsjunC” 
tion with the Ganges below Luckipouer, p, 113. „ 
Meleagrides. See Athen<eus. 
Meffier, M. See Herfchel. 
Meteorological Journal kept, at the houfe of the PvOyal Society, with tables of the Yaria= 
tions and the Dipping-needle, p, 200. et feq. See Weather . * 
'Midvsifery. See Bland., 
Ivlopfccnst ,, , 
