A TREATISE ON HYDROSTATICS 4591 BY ALFRED GEORGE GREENHILL, PROFESSOR OF MATHEMATICS IN THE ARTILLERY COLLEGE, WOOLWICH, London: MACMILLAN AND CO. AND NEW YORK. [All rights reserved.] PREFACE. THE aim of the present Treatise on Hydrostatics is to develop the subject from the outset by means of illustrations of existing problems, chosen in general on as large a scale as possible, and carried out to their numerical results; in this way it is hoped that the student will acquire a real working knowledge of the subject, while at the same time the book will prove useful to the practical engineer. It is very important in Hydrostatics that the units employed should be kept constantly in view; and for this reason the condensed notation proposed by M. Hospitalier at the International Congress of Electricians of 1891 has been adopted. In this notation the full length expression of so many "pounds per square inch" or "kilogrammes per square centimetre" is abbreviated to lb/in2 or kg/cm2; and so on for other physical quantities. The gravitation unit of force has been universally employed, except in a few problems of cosmopolitan |