$ 
Harvey and Darton’s Publications , 
ROWBOTHAM’S NEW DERIVATIVE AND 
ETYMOLOGICAL DICTIONARY 
OF SUCH ENGLISH WORDS AS HAVE THEIR ORIGIN IN THE 
GREEK AND LATIN LANGUAGES. 
Foolscap, cloth lettered. Price 7s. 
AN IMPROVED METHOD 
OF PERFORMING COMMERCIAL CALCULATIONS 
REPRESENTING 
THE SCIENCE OF ARITHMETIC IN A NEW LIGHT. 
A BOOK OF GENERAL UTILITY. 
Containing, among other matter, a full Illustration of the Theory of Proportion 
and the German Chain Rule. 
BY J. FELTON. 
12mo. bound and lettered. Price 2s. 
Also, by the same Author, and adapted to the above, 
THE TEACHER S MANUAL 
OF MENTAL ARITHMETIC; 
DISPLAYING A SIMPLE METH D OF 
SUCCESSFULLY COMMUNICATING INSTRUCTION IN 
THAT MOST USEFUL SCIENCE. 
TOGETHER WITH 
A KEY TO THE CALCULATIONS. 
12mo. cloth lettered. Price 2s. 
“ An extremely valuable little work. The rules which it gives for solving all 
questions in Arithmetic are so simple, and the mode of operation so brief and plain, 
that to every one anxious to acquire a ready method of performing calculations, it 
must be a most desirable hand-book.”— Atlas. 
HELP TO THE SCHOOLMISTRESS; 
OR, 
VILLAGE TEACHING. 
BY EMILY TAYLOR. 
Author of “ Tales of the Saxons,” “ Tales of the English,” &c. 
18mo. cloth lettered. Price Is. 6d. 
THE PICTORIAL ENGLISH GRAMMAR 
With One Hundred and Twenty Illustrations by Alfred C’ROWQUILL. 
16mo. cloth lettered. Price 3s. Gd. 
