166 Miscellaneous Intelligence. 



the ocean ; the joint effect of these tending to produce an ap- 

 proach of the two poles and a lengthening of the period of rota- 

 tion. He thinks that the modulus of the earth's elasticity, dedu- 

 cible from Chandler's period will probably prove consistent with 

 that which Sir Wm, Thomson indicates as requisite, in order to 

 account for tidal phenomena. b. a. g. 



2. Astronomy and Astro- Physics, January, 1892. Editors: 

 Wm. W. Payne, Goodsell Observatory, Northfield, Minn., and 

 George E. Hale, Kenwood Astro-physical Observatory, Chicago. 

 —This new Journal is in part a continuation of the well known 

 Sidereal Messenger, but with this is coupled a new department 

 devoted particularly to spectroscopy and astro-physics. The first 

 number, containing a variety of valuable and well illustrated 

 papers, gives a highly favorable impression of this new periodical 

 and. promises much for its success in the future. 



Y. Miscellaneous Scientific Intelligence. 



1. Essays upon Heredity and kindred Biological Problems by 

 Dr. August Weissmantst, Prof. Univ. Freiburg in Breisgau. 

 Edited by E. B. Poulton, M. A., F.R.S., S. Schonland, Ph.D., and 

 A. E. Shipley, M.A., F.L.S. Vol. I, 472 pp., 8vo. Oxford, 1891 

 (in New York, Macmillan & Co.). — The second edition of the 

 English translation of Prof. Weissmann's remarkable essays is in 

 course of publication and the first volume has just been issued. It 

 contains the essays on the Duration of Life ; on Heredity ; on Life 

 and Death ; on the Continuity of the germ-plasm as the founda- 

 tion of a theory of Heredity ; on the number of polar bodies, 

 and their significance in Heredity ; on the supposed Botanical 

 proofs of the transmission of acquired characters ; on the sup- 

 posed transmission of mutilations. The second volume will con- 

 sist of four additional essays with a preface by Pi'of. Weissmann. 



2. Ostwcdd^s Klassiker der exakten Wissenschaften. (Wm. 

 Engelmann, Leipzig). — The volumes of this series last issued 

 include : 



No. 25. Unterredungen uud mathematische Demonstrationen iiber zwei neue 

 Wissenszweige, die Mechanik und die Fallgesetze betreffend von Galileo Galilei. 

 Ftinfter und Sechster Tag (1838). 

 _No. 26. Tiber die Constitution der organischen Sauren von Justus Liebig (1838). 



No. 27. Untersucliungen iiber die Kakodylreihe von Robert Bunsen (1837— 

 1843). 



No. 28. Uber die Asymmetrie bei natiirlich vorkommenden organischen Ver- 

 bindungen von L. Pasteur (1860). 



No. 29. Uber das Gesetz nach welchem die Einwirkung der Sauren auf den 

 Rohrzucker stattflndet von Ludwig Wilbelmy (1850). 



No. 30. Abriss eines Lehrganges der theoretischen Chemie vorgetragen an der 

 K. Universitat Genua von S. Cannizzaro (1858). 



3. Minerals : A monthly magazine. Yol. I, No. 2, New 

 York, Jan. 1892 (published by the Goldthwaites). — The first 

 number of this new magazine has recently appeared and presents 

 in its 30 pages a number of short articles and notes upon a 

 variety of topics interesting to the collector of minerals. 



