WORKS PUBLISHED BY WM. S. ORR AND CO., LONDON. 
In small 8vo. 2s. 6d. cloth boards, and 4s. Qd. bound in morocco. 
ALPHABETS OF THE SCIENCES. 
FOR THE USE OF SCHOOLS AiiD SELF-INSTRUCTION. 
This series of little Volumes was undertaken with the design of furnishing 
young learners with plain, easy, short, and cheap introductions to the different 
sciences, at the same time making them more substantial and trust-worthy in 
fact and inference than has been usually done in introductory works. To attain 
this object, it was necessary to exclude every unimportant detail, and to con- 
dense into as small a compass as possible the valuable materials which had hi- 
therto remained scattered through many volumes both British and Foreign. In 
preparing these little volumes for the press, the aim of the Editor, and those 
Gentlemen who have assisted him, has not been directed so much to originality 
of information, as to present a fair epitome of the present state of knowledge 
I in the branches of science treated of, and a detail of such facts as seemed to bear 
more immediately upon the principles of the science ; it has been laid down as 
a rule to admit no technical terms in the text without a plain and intelligible 
explanation of them, either as a foot-note or otherwise. This plan has been 
strictly adhered to throughout the Series, and these little volumes will be found 
highly useful both in schools and to those who wish to acquire the principles of 
a science without the aid of a teacher. 
The following volumes are now ready, and others are in preparation :— 
THE ALPHABET OF INSECTS, THE ALPHABET OF ZOOLOGY, 
explanatory of their Structure, Physiology, explanatory of the Structure, Economy, 
and Arrangement. and Habits of Quadrupeds. 
THE ALPHABET OF BOTANY, 
explanatory of the Structure and Classifi- 
cation of Plants. 
THE ALPHABET OF GARDEN- 
ING, explanatory of the Principles of Ve- 
getable Physiology as applied to Cultivation. 
THE ALPHABET OF CHEMIS- 
TRY, explanatory of the Principles of 
Chemical Combination, with numerous Ex- 
periments. 
THE ALPHABET OF ANGLING, 
a brief Natural History of Fishes, and 
instructions in the various modes of taking 
them, founded on the basis of science. 
THE ALPHABET OF NATURAL 
PHILOSOPHY, explanatory of the general 
Structure and Laws of Matter. 
THE ALPHABET OF NATURAL 
THEOLOGY, explanatory of the Existence, 
Character, and Attributes of God. 
THE ALPHABET OF ELEC- 
TRICITY', detailing the general Laws, 
Experiments, and History of the Science. 
By W. M. HiGGiNs.F.G.S. 
THE ALPHABET OF PHYSI- 
CAL GEOGRAPHY, explanatory of the 
Constitution of Continents, Islands, and 
Seas. 
THE ALPHABET OF MEDICAL THE ALPHABET OF GEO- 
BOTANY, containing the Natural History LOGY, the Revolutions of the Globe, and 
and Botanical Description of Plants used in the Theories by which they are explained. 
Medicine, with their Qualities. By W. M. Higgins, F.G.S. 
*»* These works may also be had arranged in four volumes, forming complete treatises on 
Botany, Natural Philosophy, Zoology, Cosmography, price 7s. Gd. each volume, cloth 
lettered, 9s. Qd. embossed roan, and 10s. 6d. morocco. 
EDUCATION. 
hi \2mo. price 4s. cloth, 
THE PHILOSOPHY OF EDU- 
CATION, with its Practical Application to a 
System of Popular Instruction as a Na- 
tional Object. By James Simpson, Advo- 
cate, Edinburgh. 
In royal ^vo. price Is. M. sewed, 
THE CONSTITUTION OF MAN, 
considered in relation to External Objects- 
By George Combe. 
The People's edition. 
Of this Edition upwards of 20,000 have 
been sold. 
