For permission to use illustrations the author desires to make acknowledgments to Misses Kinne and Cooley, authors of "Shelter and Clothing"; to Sir William Ramsay; to Professor R. H. Richards, and Mrs. W. O. Atwater; to Messrs. Eimer and Amend, New York; to the Niagara Electrochemical Company; and to the publishers.

MACDONALD COLLEGE,
January 1, 1914.

J. F. SNELL.

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VII. THE LAW OF DEFINITE PROPORTIONS.

VIII. COMPOUNDS OF THE SAME ELEMENTS IN DIFFERENT

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XXIX. SPECIAL SOAPS AND SCOURING POWDERS

XXX. SOLUTION AND EMULSIFICATION OF FATS. THE

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XLI. TEXTILE FIBERS OF VEGETABLE ORIGIN. COTTON,

The Atwater-Rosa Respiration Calorimeter

The Atwater-Rosa-Benedict Respiration Calorimeter
Textile Fibers, magnified

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