190 EDITORIAL NOTES. 



gregational church, ot this city, delivered a very able and interesting lec- 

 ture upon "The Conflict between Science and Eeligion," which was listened 

 to with marked attention by hiy audience, and was subsequently published 

 an the Journal of Commerce. 



Dr. (tEORGE E. Heydon, of this city, has been delivering a course of 

 scientific lectures in the neighboring towns, that have been very well re- 

 ceived as we are informed. 



General Di Cesnola's book on Cypriote antiquities will be published by 

 Murray this fall. Title, "Cyprus, its Ancient Cities, Tombs and Temples." 

 It will be published in splendid style; 500 royal octavo pages and more 

 than 500 costly illustrations, Mr. Murray sparing no expense to make this 

 <>ontribution to antique art worthy of both the subject and the illustrious 

 author. Every gem in General Cesnola's antique collection will be per 

 fectly reproduced in its pages. 



BOOK NOTICES. 



Popular Scietjce Monthly. May, 1877. Conducted by E. L. Youmans. 



Published by D. Appleton & Co., New York. $5.00 per annum; single 



numbers, fifty cents. 



Contents for May: Gar-Pikes, Old and Young, by Prof. Burt G. Wilder, 

 illustrated. Mesmerism, Odylism, Table-Turning and Spiritualism, by Wil- 

 liam B. Carpenter, LL. D., F. R. S. Aqueducts, by William E. Simmons, il- 

 lustrated. Gravitation and How it Works, by Granville F. Foster. On the 

 Habits of A.nts, by Sir John Lubbock, Bart. The New Star in the Constel- 

 lation of the Swan, by Amedee Guillemin, illustrated. Antique Marbles, by 

 John D. Champlin, Jr. On the Wonderful Divisibility of Gold and Other 

 Metals, by Alexander E. Outerbridge, Jr. Movements of Jupiter's Cloud- 

 Masses, by Puchard A. Proctor. Toadstool-Eating, by Julius A. Palmer, Jr. 

 Sketch of President Barnard, with portrait. Correspondence. Editor's 

 Table: Mental Overwork under the Competitive Prize System — The Bela- 

 tive Importance of Ideas — Concerning "Blue Glass." Literary Notices: 

 Bao-ehot's English Constitution, and other Essays — Spencer's Principles of 

 Sociology — Prescott's Electricitj'' and the Electric Telegraph — Tyndall's 

 Lessons in Electricity — Wright's Philosophical Discussions — Wallace's 

 Ptussia, etc. Popular Miscellany: Cotton Culture in Egypt — Testimonials 

 to Mr. Darwin — Ignorant Enterprise — Production of Near-Sightedness in 

 Schools — Astronomical Observations on the Rocky Mountains — Influence of 

 Heat on Galvanic Conductivity, etc. Notes. 



Strength and Calculation of Dimensions of Iron and Steel Construc- 

 tions, with reference to the latest experiments. Translated from the 

 German of J. J. Weyrauch, Ph. D., Prof. Polytechnic School of Stuttgart, 

 with four folding plates. New York: D. Van Nostrand, publisher, 1877. 

 This little work of 112 pages is designed to give the general results of 



