262 Miscellaneous Intelligence. 
2. Forschungen auf dem Gebiete der Agrikulturphysik. Heraus-_ 
gegeben von Dr. E. Woxtyy, Professor der Landwirthschaft in — 
Biineheti. Band i i, 482 pp., an nd Band i ii, 1 and 2 Hefte. Heidel- — 
berg: C. Winter—This excellent journal of agricultural physics, — 
which has entered on its second year, fills a very necessary place 
in scientific literature. Some of the more important questions in_ 
J e, M.D., i pmenei hi Prof. Mayer, Dr. Albert 
H. Buck, Dr, Samuel Sexton, .H. Burnett, Dr. J.O reen 
a neer. Vol. i, 1, Janua e 
York (William Wood & Co.).—This new journal proposes to fill 
a new and highly important place among American scien 
periodicals. The first number ers an article 
-ontain th 
on the graphic and photographic illustration of Sound-waves, by 
Dr. C. J. Blake. 
The following books have been received but cannot be noticed — 
in this num 
Journal of a Tour in Morocco and the Great — by Foush Dalton Hooker 
and John Ball; with an Appendix by George Maw. 499 pp. 8vo. London, 1878 
(Macmillan & Co. 
The Study of Rocks: an elementary Text-book of Petrology, by Frank Rutley, 
ra Bile te ects London, 1879 (Longmans, Green & Co.) 
0. xc. 
Bulletin of the Museum of Comparative Zoology at Harvard College, Cambri bridge, 
Mass, Vol. v, Nos. 8, 9 and 1 10. Reports sn Operations of the 
Echini, b: d Crinoids, by L. F. de Pourtalés. 
by T. Te eee pp. 181-238. Hydioida, by 8. F. Clark; pp. 239-252. 
