BOOK REVIEWS. 635 



when we are about to have a lectui^ on the subject by Prof. Kedzie, of the 

 State Agricultural College of Kansas, and for all persons who are interested 

 in one of the most recent and useful discoveries in electricity. 



Professor Dolbcar discusses all the phenomena of sound, magnetism and 

 electricity which are involved in the action of the Telephone, and gives di- 

 rections for the construction of a speaking instrument invented by himself, 

 in which magneto-electric currents are utilized for the transmission of speech 

 and other sounds. 



He also discusses the Telephones of Eeiss, Gray and Bell, and concludes 

 with the remark that there is nothing in the principles involved in their 

 construction that was not known in 1840, and that "mechanism is all that is 

 needed to realize completely theproiDhetic picture of the 'Grraphic' of the 

 orator who shall at the same instant address an audience in every city in 

 the world." 



It is a book of facts, lucidly written and very well illustrated with ex- 

 cellent wood cuts, well worth the perusal of all who desire to find the whole 

 subject in a small compass. 



Money and Legal Tender in the United States, By H. E. Linderman, 

 Director of the Mint. New York: G. P. Putnam's Sons; 1877. pp. 174, 

 12 mo. For sale by Matt Foster & Co. $1.25. 



The object of this work is to set forth, in brief and convenient form, the 

 laws relative to coinage, legal tender and the money standard of the coun- 

 try. Just at this time when the prominent national subject under consider- 

 ation by Congress and by the people at lai-ge is that of bringing currency 

 up to a specie basis, such a work will be found especially valuable, for 

 whether all agree with Dr. Linderman's theories or not, all will accept his 

 statements as unquestionable, and nine-tenths of those who read the work 

 will be very glad to have these facts brought together for them in so con- 

 venient and compact a shape. The first chapter is devoted to a brief and 

 uncommonly clear and definite explanation of the various terms used in 

 treating of bullion, mint coinage and money, after which follow chapters 

 upon the Provisions of the Constitution relative to the coinage of money 

 and the regulation of its value; Legislation regulating the value of foreign 

 coin ; Metallic money in colonial times ; Establishment of the mint, money 

 standard, national coinage, money of account and legal tender; Coinage act 

 of 1873, change from the dollar standard of gold and silver to the gold 

 standard; What constitutes legal tender?; Paper currency since 1863 ; J^a- 

 tional currency secured by pledge of U. S. stocks ; Mint weights and weigh- 

 ing of bullion and coin; Proposition for the remonetization of silver con- 

 sidered ; Eeview of money situation in Europe ; Apj)endix, with general 

 summary and tabular statement of total coinage of the United States, etc. 

 It is a work of decided interest and value to all classes, and doubtless will 

 meet with great success. 



