M AC 
Lycopodium annotinum, xlv, 46. 
inundatum, xlv, 47. 
selago, xlv, 48. 
Lyell, C., medal of the Royal So- 
ciety conferred on, xxx, 174. 
, address before the Geological 
Society of London, 1887, xxxiii, 
76. 
, on the changes of climate 
on the earth in past times, xx, 
377. 
, coal formation of Nova Sco- 
tia, and on the age and position 
of the gypsum, xlv, 356. 
, upright trees in the coal strata 
of Nova Scotia, xlv, 353. 
, on the cretaceous strata of; 
New Jersey, xlvii, 213. 
, on the elevated beaches, and 
boulder formations of the Cana-|) 
dian lakes and valley of St. Law- 
rence, xlvi, 314. 
, on the elevation of Sweden, 
xxviii, 72, 387. 
, footprints of birds in the Con- 
necticut valley, xlv, 394. 
, Views on granite, xxxiii, 116, 
, probable age of graphite and 
anthracite in the mica slate at) 
Worcester, Mass., xlvii, 214. 
, geological position of the mas-| 
todon at Big Bone Lick, Ky., and 
elsewhere, xlvi, 320. 
, geology of, 4th edition, notice 
of, xxix, 358. | 
, proposed visit to the United 
States, xli, 403 ; xlii, 213. 
Lyon, L., on surveying instruments, 
xiv, 268.f 
Macaire, vegetable physiology in 
relation to rotation of crops, xxiii, 
138. 
, injurious action of gases on 
vegetation, xxul, 193. 
, on nitrogen in animal sub- 
stances, xxill, 384, 
» experiments on hydrochloric 
148 
acid, X1,,o95. 
MAC 
McConnell, B. R., notice of a re- 
volving electro-magnetic instru- 
ment, xxxill, 188. 
McCord, J. S., meteorological ob- 
servations at Montreal, 1836-40, 
xli, 330. 
MacCulloch, J., essay on remittent 
and intermittent fevers, xviii, 
338. 
McGuire, W. W., on the prairies 
of Alabama, xxvi, 93 ;—causes 
of, xxvi, 96. 
Machine for cleaning grain invent- 
ed, iv, 387. 
and its model, relation be- 
tween, E. Sang, xxiv, 264. 
Machines, examination of, maximum 
and minimum effect of, A. B. 
Quinby, xii, 346. 
, electrical, see Electrical. 
Machinery, use of soapstone in di- 
minishing friction of, xiii, 192. 
and manufactures, economy 
of, xxiv, 105. 
‘Macle, see Chiastolite. 
_||Maclure, W., on different systems 
of education, ix, 160, 163. 
, on the Pestalozzian system 
Of, x Ode bx labs 
, geological arrangement, out- 
lines of, 1, 209. 
, systematic arrangement of 
rocks and their probable origin, 
vil, 26]. 
, geological systems, geologic- 
al maps, and chatoyant feldspar, 
1x, 253. 
; changes in N. Ameri- 
ca, conjectures on, east of the 
Stoney mountains, vi, 98. 
remarks on Mexico, 
9 
xx, 406. 
, Igneous theory of the earth, 
remarks on, xv, 384; xvi, 351. 
, on Mosaic geology, ix, 157. 
» passage to Mexico of, xv, 
400. 
, memoir of, S. G. Morton, 
xlvil, 1.f 
| , list of works of, xlvii, 16. 
Maclurite, description of, v, 246. 
