1872.] 
Magnets, directive force of, 275 
Mammoth cave, life in the, 133 
Manganese in blood, 114 
— delicate test for, 114 
Manuscript, &c., copying, 273 
Mapping spectra, 122 
‘““Marine Aquarium of the Crystal 
Palace, Handbook to the” (re- 
view), 373 
Maury, Prof. T. B., the origin of the 
great cyclones, 417 
Maw, W. H., and DREDGE, 
** Modern Examples of Road and 
Railway Bridges” (review), 507 
Maskelynite, 521 
Maxite, 521 
MaxwELL, J. C., ‘‘ Theory of Heat” 
(review), 379 
‘Mechanics, Experimental,” by R. S. 
BALL (review), 256 
‘Mechanism of Accommodation for 
Near and Distant Vision,” by R. 
E. DUDGEON (review), 505 
Mercury, purifiying, 110 
MERRIFIELD, J., ‘‘ Magnetism and 
Deviation of the Compass” (re- 
view), 501 
— C. W., ‘‘ Technical Arithmetic and 
Mensuration”’ (review), 379 
Metallurgy, progress in, 99, 259, 387; 
I 
519 
Metals, electric currents from bending 
of, 273 
— separation of by oxy-hydrogen 
light, 124 
Meteoric Astronomy, 137 7 
— iron, figures on surface of, 279 
— — carbon in, 541 
Meteorite, the San Georgio, 279 
Meteorites, fossil, ror 
Meteorological phenomena and col- 
liery explosives, 385 
Mica, from Adamello granite, 522 
‘* Micrographic Dictionary” (review), 
gI 
Micrometer eye-piece, 270 
Microscope, deceptive appearance of 
objects under, 121 
— machine for cutting vegetable sec- 
tions for, 529 
— lamp, 120 
Microscopes, analytical catalogue of, 
529 
Microscopic objeéts, classification of, 
397 
Microscopical drawings, instrument 
for making, 529 
Microscopy, progress in, 120, 269, 
397, 529 ‘ 
— coloured glasses in, 529 
Micro-spectroscope, objects for, 122 
INDEX. 
549 
Midland distri, blast-furnaces in, 100 
MILLER, W, A., ‘‘ Elements of Chemis- 
try” (review), 381 
Milk-sugar in vegetable juice, 116 
Mineral statistics for 1870, 257, 261 
Mineralogy of Cornwall and Devon, 
102 
— progress in, Ior, 261, 389, 520 
Mineralogical tables, 390 
Miners’ Association of Cornwall and 
Devon, 387 
‘““Mining Magazine and Review,” 259 
Mining, progress in, 97, 257, 385, 
EY) 
‘* Miscellanies,” by J. A. SymMonps 
(review), 81 
‘*Molecular Physics in the Domain of 
Radiant Heat, contributions to,” 
by J. TYNDALL (review), 504 
Molybdenum, mineral, ror 
Mont Cenis Tunnel, 106 
MortTov, H., vertical lantern, 396 
Montebrasite, mineral, 262 
Moray, TESSIE DU, progress of oxy- 
gen light of, 528 
Muscle, living, conductivity of, 405 
Music of speech, 281 
66 Nee Philosophy,” by J. 
C. Warp (review), 384 
“ Natural Philosophy,” by E. Arkin- 
SON (review), 380 
“Natural Philosophy, Elementary 
Treatise on,” by A. P. Descua- 
NEL (review), 255 
‘Naval Science,”’ 268 
Newfoundland, mineral resources of, 
518 
NicHo.son, H. A., ‘Introduction to 
the Study of Biology” (review), 
377 
— ‘ Zoology for Students’ (review), 
376 
Nickel plating, 402 
Nitrogen for plants, kreatine as source 
of, 114 
ss Qo Explorations.” by W. 
L. JORDAN (review), 353 
OaiLBy, W., ‘‘New Theory of the 
Figure of the Earth” (review), 
382 
Ouiver, S. P., British artillery ma- 
tériel, 232 
— medizval and modern ordnance 
compared, 333 
— the dolmen mounds and amor- 
pholithic monuments of Brittany, 
I, 436 
Ordnance, medizval 
compared, 333 
and modern 
