Miscellaneous Intelligence. 423 



gation, and strength of materials, by Professor Thurston. Nu- 

 merous astronomical articles are furnished by R. A. Proctor, of 

 London : e. g. spectrum analysis, sun (in part), &c. The medical 

 and physiological articles are mainly by Dr. J. C. Dalton, while 

 other well-known names add authority to the contents of this vol- 

 ume. We have in former notices called attention to the large 

 amount of special work performed for this edition of Appletou's 

 Cyclopedia by men of acknowledged ability and original research 

 =" "^- ^epartn ' o . • , .. . . ^, . . ,. . . . 



; that 1 

 wood-cuts are numerous and excellent in quality. b. s. 



2. Annual Report of the Light-Mouse Board to the Secretary of 

 the Treastiry for the year 1875. 136 pp. 8vo. Washington, 

 1875. — The executive members of the Light-House Board are Pro- 

 fessor Henry, Commander J. G. Walker, U. S. N., Naval Seci-e- 

 tary, and Major P. C. Hains, Engineer Secretary. The report for 

 1875 contains " an Account of the investigations of the Light- 

 House Board relative to illuminating materials, by the Chairman 

 of the Committee on Experiments." Lard-oil had been in former 

 experiments found to be the best illuminating oil; and this conclu- 

 sion is sustained as regards the large lamps by new comparisons of 

 lard oil with the best mineral oil, though not as regards the smaller. 

 On account of the increased ^ 

 will hereafter be introduced. 

 Henry's valuable papers containing the " Investigations of the 

 Board relative to sound in its applications to fog-signals," made 

 under his direction in 1875. 



3. Jfe«er-J[>mgmm.— Messrs. A. & T. W. Stanley, of New Brit- 

 ain, Conn., well known as makers of accurate measures of length, 

 levels, etc., have lately prepared a neat meter-diagram, printed on 

 heavy paper faced with linen, with the scales and tables on both 

 sides, and 4^ inches wide. It gives in a complete manner the en- 

 tire metric system, with the relations of feet and inches to the 

 meter and its subdivisions, and in the appended tables the equiva- 

 lents in denominations in use, with rules for conversion. Professor 

 >fewton says of it : "1 know of no easier way by which anyone de- 

 sirous of learning the system can do it, than by studying this 

 scale, and keeping it in a place where he will frequently see it." 

 It is put up in a paper case, and sold at the moderate price of 

 three dollars per dozen, for use in schools, etc. 



Handbook of Architectural Styles. Translated from the German of A. Rosen- 

 garten by W. CoUett Sandars. 502 pp. 8vo, with 639 illustrations. 1876. New 

 York. (D. Appleton k Co.)— An excellent, and profusely iUustrated work. 

 . A Short History of Natural Science and of the Progress of Discovery from the 

 tune of the Greeks to the Present Day, for the use of Schools and Young Persons; 

 by Arabella B. Buckley. 488 pp. 12mo, with illustrations. 1876. New York. 

 (D. Appleton & Co.)— An instructive work. 



Physics of the Ether. By S. Tolver Preston. London. (E. and F. N. Spon.) 



