D. APPLETON & CO.'S PUBLICATIONS. 



Professor E. L. YOUMANS'S WORKS. 



THE HAND-BOOK OF HOt STJIOLI) S< IliM K. A 



Popular Account of Unit, Li.u'lit, Air, Aliment, ;m.l ('li-in-iu 

 tlicir Scientific Principles and Domestic Applicati I Illus- 



trated. Cloth, $1.75. 



THE CULTURE DEMANDED BY MODERN 1,1 IT. 



A Series of Addresses ;ind Arguments on the Clar 



Education. Edited, with an Introduction mi Mental I>i~ciplinc in 



Education. 1 vol., 12mo. Cloth, $00. 



CORRELATION AND CONSERVATION OT I')K( is. 



A Scries of Expositions by Scientific Men. Edited, with an Intro- 

 duction and Brief Biographical Notice- of tin- Chief 1 

 the New Views, by EDWARD L. YOUMANS, M. D. 1_ 

 $2.00. 



CONTEXTS. 



I. By Professor W. R. GROVE. The Correlation of Physical Foi 

 II. By Professor HELMHOLTZ. The Interaction of Natural Forces. 



III. By Dr. J. R. MAYER. 1. Remarks on the Forces of 1 Nature 



2. On Celestial Dynamics. 



3. On the Mechanical Equivalent of 1 i 



IV. By Dr. FARADAY. Some Thoughts on the Conservation < 



V. By Professor LIEBIG. The Connection and Equivalence of F< 

 VI. By Dr. CARPENTER. The Correlation of the Physical and 

 Forces. 



" This work is a very welcome addition t our scientific lit 

 will be particularly acceptable to those who wish to ol.tain a p-.puli'.r but 

 at the same time precise and ek-ar view of what 1 

 highest law in physical science, the principle ot' t! 

 Sufficient attention has not been paid to the public.r 

 graphs or memoirs upon special >nbjccts. l>r. ^ 



the value of such collections in a verv striking manner, and vrc earnestly 

 hope his excellent rxample may bo followed ii. - of aCMDOe." 



Am r'n -n n Journal of Scie n ce. 



New York: D. APPLETON & CO., 1, 3, & 6 Bond Street 



