"The design of the author--that of furnishing a valuable collection of rules and theorems for the use of such as are unable, from the want of time and previous preparation, to investigate mathematical principles--appears to have been very successfully attained in the present volume. The information which it affords in various branches of the pure and mixed Mathematics embraces a great variety of subjects, is arranged conveniently, and is in general conveyed in accurate and concise terms. To THE ENGINEER, THE ARCHITECT, THE MECHANIC--indeed to all for whom _results_ are chiefly necessary--the work will doubtless form a very valuable acquisition." _Letter from_ CHARLES DAVIES, _Professor of Mathematics in the Military Academy, West Point_. "MILITARY ACADEMY, West Point, May 14th, 1835. "_To Messrs. E. L. Carey & A. Hart_,-- "The 'Mathematics for Practical Men,' by Dr. Gregory, which you have recently published, is a work that cannot fail to be extensively useful. "It embraces, within a comparatively small compass, all the rules and formulas for mathematical computation, and all the practical results of mechanical philosophy. It is, indeed, a collection of the useful results of science and the interesting facts which have been developed by experience. It may safely be said, that no work, of the same extent, contains so much information, with the rules for applying it to practical purposes. "I have the honour to be, "With great respect, "Your obedient servant, "CHARLES DAVIES, "_Professor of Mathematics_." _Extract from a Letter from_ J. A. MILLER, _Professor of Mathematics in Mount St. Mary's College, Emmettsburg, Md._ "Since the London edition of Gregory's Mathematics for Practical Men appeared in this country, it has been much used in this institution. The accuracy of its definitions, its beautiful systematic arrangement, the many simplified and facilitated methods which it proposes, and its highly practical character, must recommend it strongly to public patronage, as one of the very best works which have lately issued from the press. I have examined your edition of this valuable work sufficiently to say with confidence that it is very accurately printed." * * * * * [Transcriber's note: Only obvious printer's errors have been corrected (e.g.: 3 s instead of 2, etc.). The author's spelling has been maintained and inconsistencies have not been standardised. The advertisement page has been move from the front to the end of the book. Other corrections made: --Page x: "the wealth of rations" has been replaced by "the wealth of nations". --Page 17: "Pressure of Rarified Air." has been replaced by "Pressure of Rarefied Air."