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Harper's Scientific Memoirs | 
g 
Under the General Editorship of JOSEPH S. AMES, Ph.D.., 
; Professor of Physics in Johns Hopkins University. : 
The first two volumes of the collection to appear will be the following : d 
J 
‘ 
| I.—The Free Expansion of Gases 
| Memoirs by Gay-Lussac, JouLr, and JouLe and Tuompson. Editor, ‘ 
Josepu S. AMEs, Ph.D., Johns Bapkins University. | 
j 
s s ‘ s 
| Il.—Prismatic and Diffraction Spectra | 
Memoirs by JoserpH von FRAUNHOFER. Editor, Josepu S. Ames, Ph.D., 
Johns Hopkins University. 4 
often happens that articles of great importance appear in journals which are in foreign 
oe or which are not taken n by libraries generally. Such articles, if of sufficient impor | 
| ant sie Hong and oo upon which the various sciences r now so rare that ny 
will be reprinted in this series. Again, the volumes containing the original account of many of the 
i ien st 
ch a 
annot be referred to by teachers and students except in certain favored universities, and it 1 
ope that this collection will ie these papers within easy reach of all who may be interested 
in them 
he entlemen memed below have kindly consented to take an active part in the editing of 
the Sahuiee. of the series 
Mechanics, Mathematics, Thermodynamics Technical Subjects. Applied Electricity. | 
W. F. MAGIE, Princeton University. C. A. PERKINS, University of Tennessee. 
C. BARUS, cleat re. HENRY LEFAVOUR, Williams College. 
C. MENDENHALL, Worcester Polyt.chnic | W.L. ROBB, Trinity College. 
Lnstitute. £. B. ROSA, Wesleyan University. 
A. G. WEBSTER, Clark University. 
oes Light and Heat. 
ectricity and Physical Chemistry HENRY. CREW, Northwestern Un ver y. | 
G. F. BARKER, University of Pennsylvania. | D. B. BRACE, University of Neb 
Hf. M. GOODWIN, Mass. Inst. of Technology. | F I. 0. WADSWOR chen Yerkes ae vatory, 
ff. C. JONES. Mika Hopkins University. University of Chicag 
E. P. LEWIS, University of California. 
| Chemistry and Mineralogy- 
| 
Astronomy, Geology, Etc, IRA REMSON, Johns Hopkins University. 
H. F. REID, Johns Hopkins University, f:. S. DANA, Yale University. 
A. S. MACKENZIE, Bryn Mawr College. E. B. MATTHEWS, Johns Hopkins University 
C. L. POOR, Johns Hopkins Cniversity. | WW. RANDA LL, Johns Hopkins University. 
their 
ued. 
Messrs. HARPER & BROTHERS request all interested in this collection to send 
| names and addresses, so that they may be duly advised of the publication of the volumes as iss 
| 
HARPER & BROTHERS, Publishers, New York and London; 
2) 
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