a ce nee eT a a a TT 
ec temaiel ate 
Miscellanies. 155 
will enable him to do greater justice to his subject thah most writers 
on ornithology : while the easy manner in which he expresses him- 
self in describing natural objects, will, we doubt not, approximate his 
descriptions; for popular interest, to those of the celebrated Wilson. 
5. Elements of Physics, or Natural Philosophy, General and 
Medical ; explained independently of technical Mathematics. In 
two volumes. Vol. II. Part I. Comprehending the subjects of 
Heat and Light ; by New. Arnort, M. D., of the Royal College 
of Physicians. First American, from the first London edition. 
Carey and Lea, Philadelpbia.—The second volume of Dr. Arnott’s 
Elements of Physics, so long and impatiently called for, has just is- 
sued from the press of Carey & Lea. ‘The first volume appeared in 
London more than two years since, and has already gone through 
four editions in England, beside being reprinted in America, and in 
France, where it was translated, and accompanied with algebraical 
formule for the use of schools and colleges. 
The first part of the second volume treats of heat and Hight, and 
4 regards these branches, may be deemed a “ royal road to sci- 
ence,” for the explanations are so clear and familiar, as to be per- 
fectly intelligible to such as are not skilled in technical learning.— 
feuxed to this volume is an appendix, in which the cause of stut- 
tering or stammering is explained, and a simple remedy suggested, . 
which, by the author, is considered effectual. 
In a practical view, it is a work of great value. It instructs the 
artisan in the nature of heat ; qualifies him to apply and control it, 
and to convert its most terrible force into a quiet and manageable 
Working power. In the language of the author, “the element of 
heat In its tranquil and invisible diffusion, is the life and soul of the 
universe ; the cause of seasons and climates, and of all the changes 
and activity which distinguish a living world from a dead and frozen 
Mass,’ Fire, in man’s service, may be figured as a legion of spirits, 
‘0 whom no labor is difficult. In every private dwelling he has these 
Spirits as his domestic servants ; in his manufactories they are melting 
8s, reducing ores, and boiling and evaporating for an hundred pur- . 
Poses. But it is chiefly while chained to the steam engine that they 
Put forth a giant’s strength, heaving a river from the bottom of a 
mine, or urging a vast ship through the winter storm.” Equally ad- 
mirable is the “ nice dexterity with which they twist the silk or cotton 
threads, and weave them into the most delicate fabrics.” ‘The work 
