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Rh would fail us to signalize all the excellences of this work, which has the rare merit of being truly readable for the unprofessional and unscientific man. As regards the mechanical style of the work, it is in all respects admirable. The paper is of the best quality, the type large and clear, the proof-reader's duty faithfully done, and the woodcuts, charts, and plates, equal to the best. We would call special attention to the "Geological Map-Model" of the whole State. This consists of a map of Iowa in six sheets, whereof the lowest represents the Lower Silurian formation, underlying the entire State; over this the Upper Silurian, which covers all the foregoing except the extreme northeast corner; then the Devonian, which retires still farther back from the northeast corner; then in succession the sub-Carboniferous, the Lower and Middle Coal-Measures, the Upper Coal-Measures, and the Cretaceous.

insurance is "a subject of which, though some of the details may be complicated, the first principles are singularly plain." So wrote De Morgan, thirty-six years ago; a period within which there have been created in America seventy life-insurance companies now existing, the details of whose business are before us; of whose policies about 917,000 are now in force, insuring about $2,331,000,000, with a yearly income exceeding $125,000,000, and holding assets amounting to $375,000,000. These enormous sums are the insurances, and yearly and accumulated payments, in behalf of beneficiaries, who doubtless exceed 3,000,000 in number; and of fully nineteen-twentieths of these interested persons it is safe to say that they know nothing of the "first principles," so "singularly plain," of which De Morgan spoke, but of which he said, "nothing but indifference can prevent the public from becoming well acquainted with."

Of publications professing to popularize ideas about life insurance there are enough and a surfeit; but, the greater part of them being openly written in advocacy of some particular company, they are regarded by most people as advertisements, to be hastily read and carelessly cast aside. It seems, therefore, that, for an authoritative exposition of the principles and practices of the business, the public will regard the more such a presentation of the subject as has now been made of it by Prof. Van Amringe, who, from his position, will not be suspected of writing in the interest of any company or class of companies.

In his preface the author says: "The object of this pamphlet is to dispel the apparent mystery which envelops assurance—to give the general reader a clear and concise explanation of the principles on which it is founded, and their application in business. Purely technical discussion has been avoided, and the necessary calculations have been made in as plain English as possible. A simple explanation has been given of the several kinds of companies and their management; of the mode of obtaining a policy, and the conditions upon which it is issued; of the manner of securing the amount due under a policy when it shall become a claim; of the various kinds of policies issued; of the construction and use of mortality tables; of net premium, expenses, and loading; of reserve for reinsurance, lapse and surrender of policies; of surplus, its distribution and modes of application; of government protection of policy-holders and supervision of companies. An outline sketch of the history of life assurance, particularly in the United States, has been added."

In the accomplishment of his task, Prof. Van Amringe has been, in our judgment, very successful; a large amount of information has been condensed into moderate space, and at the same time clearly set forth, while there is no attempt at mere display of learning or of research; though the treatise is the result of a good deal of both. The work is, as a whole, so well done that we omit any mention of the two or three minor points we had marked for criticism; excepting this one which the professor can readily amend in his next edition. Life assurance is scarcely known in this country. Life insurance is well known, and is the subject which Prof. Van Amringe has