Maraldi, his notion concerning the propagation of bees, p. 17, 1 8. Drones as fmall as 
common bees difcovered by him, p. 20, 21, 
Marjkam , Mr. his account of the ufefulnefs of walking and rubbing the items of trees, 
to promote their annual increafe, p, 12. See Trees. 
Mary port , in Cumberland, an account of a perfon there who could not diitinguilh 
colours, p. 260 — 265. 
Maferes , Francis, Efq; his method of finding the value of an infinite feries of decreafing 
quantities of a certain form, when it converges too fiowly to be fummed in the com' 
mon way by the mere computation and addition, or fubtradtion, of fome of its initial 
terms, p. 187. See Quantities. 
Maskelyne, Rev, Dr. Nevil , an account of his new inftruraent for meafuring fmall angles, 
called the prifmatic micrometer, p.799. See Micrometer. 
Majls of fhips, thofe parts of them which were covered with lamp-black and tar, or 
lamp-black and oil, have efcaped injury by lightning, p. 85, 86. A curious in- 
fiance of this kind, p. 86—89. 
Mathematical articles , leading to a clear and fatisfaRory confideration of the motion 
of the earth’s axis, p. 267— 288. How the joint centrifugal force of a fpheroid, or 
cylinder, having a rotatory motion about any momentary a^xis, is computed, p. 289 
—295. 
Mathematical laves, of thofe general ones which regulate and extend proportion univer- 
rally ; or a method of comparing magnitudes of any kind together in all the poffible 
degrees of increafe and decreafe, p. 450 — 457. 
Mathematical problem, p. 283— 288. See Problem. 
Mathematicians, almoft all their geometrical reafoning is derived from Euclid, p. 430* 
Their reafonings with refpeR to proportional magnitudes very confined, p. 450, 45 r. 
An inveftigation concerning them, p» 451— .437. 
Maty, Dr. a fhort account of his illnefs, and of the appearances in the dead body, 
p. 608 — 613. 
Megameter and micrometer, an account of a new one, p. 789—798. 
Metals. Directions for making the beft compofition for the metals of re fie Ring telef- 
copes; together with a defeription of the procefs for grinding, poliffiing, and giving 
the great fpeculum the true parobolic curve, p. 296. See TeleJcopes. 
Meteorological Journal for the year 1776, kept at Briftol, 333. State of the barometer 
during that year, ibid. An abridged table of the winds for that year, p. 334. Quantity 
of rain which fell, ibid. Fair and frofty days, ibid. Monthly account of the wea- 
ther, 354 — 336. Meteorological Journal for the year 1776 kept at the houfe of the 
Royal Society, p. 357— -384. See Tables. 
Micrometer and megameter, an account of a new one, p. 7 S9 — 798. An account of 
anew infirumentfor meafuring fmall angles, called the prifmatic. micrometer, p.799. 
Difficulties in the ufe of the objeft-glafs micrometer, p. 79-9 — 801. Method of car- 
Vom LXVII. 3 S redting 
