20o Miscellaneous Intelligence, 



S. Ames of Baltimore will act as general editor, and a list of 

 twenty-two names is given of gentlemen who are to take an 

 active part in the different departments. The series will be in 

 general more or less similar to Ostwald*& Klassiker der exakten 

 Wissenschaften (Engelmann, Leipzig) often referred to in these 

 pages; like this it will consist of thin octavo volumes, at once 

 convenient for reference and inexpensive. Volumes I and II now 

 in press, both edited by Professor Ames, are as follows : 



I. Memoirs by Gay-Lussac, Joule, and Joule and Thomson on 

 the Free Hxpansion of Gases. 



II. Fraunhofer's Papers on Prismatic and Diffraction Spectra. 

 A number of other volumes are stated to be in course of prepa- 

 ration. 



3. Electro- Mechanical Series : Industrial Electricit y : Trans- 

 lated and adapted from the French of Henry de Gbaffigny 

 and edited by A. G. Elliott, B.Sc. 152 pp., 12mo. London 

 and New York, 1898 (Whittaker & Co.) — In its original French 

 form, this little volume and the others of the series have had 

 much success, and it may fairly be assumed that they will have a 

 similar reception among English readers. The present volume is 

 preliminary and general in its character and the treatment of the 

 different subjects is necessarily brief, since only one hundred and 

 fifty pages are given to the whole from the nature of electricity 

 to the telegraph. The other volumes in preparation which are 

 soon to follow will take up separate topics in some detail. 



4. A Catalogue of Earthquakes on the Pacific Coast: 1769 to 

 1897. (253 pp.) By Edward S. Holden, LL.D. Smithsonian 

 Miscellaneous Collections 1087. Washington, 1898. — This vol- 

 ume is a reprint and extension of the pamphlet on the same sub- 

 ject issued in 1887. It gives a complete account of the earthquake 

 observations made at Mt. Hamilton during 1887-1897, together 

 with an abstract of the large mass of information which has been 

 collected from many sources regarding the Pacific coast earth- 

 quakes during this period. The Lick observatory was equipped 

 with a set of Prof. Ewing's instruments in 1887 and in 1888 began 

 its active work of registering earthquake shocks and in collecting 

 material in regard to them. 



5. Ostwald's Klassiker der Exacten Wissenschaften. Leipzig, 

 189S. (VV. Engelmann.) The following volumes in this valuable 

 series have recently been published. 



Nr. 93. Drei Abhandlungen iiber Kartenprojection von Leonhard Euler. 

 (1777.) 77 pp. 



Nr. 94. Ueber das VerMltniss zwischen der chemischen Zusammensetzung 

 und der Kry?tallform arseniksaurer und phosphorsaurer Salze. (Uebersetzt aus 

 dem Swedischen.) Von Eilhard Mitscherlich. (1821.) 59 pp. 



Nr. 95. Pflanzenphysiologische Abhandlungen. I. Blaten des Rebstockes. 

 II. BeweguDgen der Mimosa pudica. III. Eletnentarorganismen. IV. Brenn- 

 haare von Urtica. Von Ernst von Briicke. (1844-1862.) 86 pp. 



Nr. 96. Sir Isaac Newton's Optik oder Abhandlung uber Spiegelungen, 

 Brechungen, BenguDgen und Farben des Lichts. (1701.) I. Buch. 132 pp. 



