( 297 ) 
Lough-Neagh, Tome Obfervations upon the Properties of 
the Water of that Lake, 0. 260. 
M. ^ 
Marble, a curious fort of it difcover’d in Wales % p, 27 5. 
A Quarry of various coloured Marble .difcover’d \ia 
Inland^ p : 278. 
Mathematicfa. Problems for finding the Center of Of» 
dilation , p. ii- Lemma’s and Problems concerning 
the Motion of a jlretched String , p. 260 Mr Nic. Fa- 
de’s Defence of his Solution of a Problem for finding 
a round Solid capable of leaf Refifience, p. IJ2. An rly? 
perbolick Curve made by Water afeending between two 
Glafs Planes, p . 1 5 1 • See Aftronomy. 
Mechanic ^ Arts of the Indians, fpme Account of them, 
: p. 225. 
A Medal inferibed to St. Januarius after the Eruption of 
Mount Fefuvius in the Year 1707./. 25, See Anti- 
quities. 
Menfes , a Woman having them to 70 Years of Age, 
p. 236. 
Meteors obferved in the Indies, p . 235. 
Microfcovical Obfervations on Animalcula found upon 
Duck-weed, p. \60.~ upon the Mufcular Fibres of 
.a Whale , p. 164. 
Minerals, an Account of fome from Sweden, p. 222, 
Mineral Waters. See Waters. 
Mortification. See Chirurgical Obfervations. 
Nerves. See Optick, Nerve. 
The Nut-jobber. See Birds. 
• O. Old 
