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quality, an elementary book should display greater clearness, method, and precision.
Science occupies too large a place in life for us not to respond to the taste of the public, which desires to know its beauty and utility. On the other hand, there is room for a certain amount of scepticism as to how much science it is possible to communicate to minds (even the best) unfamiliar with laboratory research. What is to be done? Excessive simplification and unnecessary detail must alike be avoided. To popularize is to select. The rule is in the technical portion to pass over all that is devoid of educational value; to explain what is essential in terms which professional scientists would not repudiate; to present science as liberal and humane; to aim at something higher than the immediate interest of curiosity, and to offer to those whom their occupations keep at a distance from scientific work sound ideas as to the place and power of man in Nature. To popularize science would be labour in vain if, besides its instructive value, such work did not possess the merit of contributing to the general progress. by cultivating the mind.
TABLE OF CONTENTS.
II. Critical examination of the facts upon which are based
Tetanus a toxic disease, 108.--Experiments by Kitasato,
and Vaillard and Vincent, 108.-Diphtheritic and tetanic