560 Reviews — The Neues Jahrhiich. 



that of the existing river- valleys. For instance, " The valley of the 

 Beaver is excavated to a depth of over 150 feet below the present 

 •water-level. The trough of the Ohio is still deeper. The Tuscarawas 

 at Dover is running 175 feet above its ancient bed. The rock bottom 

 of the Killbuck valley has not yet been reached." Very few 

 palgeontological facts are recorded in these volumes, being reserved 

 " for the final Report. 



A very clear little geological map and six large sheets of vertical 

 sections (oddly called "maps" also) accompany the Eeports we have 

 been noticing. The latter are drawn upon a somewhat new principle 

 — the sheets being crossed by a number of horizontal lines, the space 

 between each representing 10 feet, and all the sections being drawn 

 to the same scale, are so placed that a certain datum bed is on the 

 same line in every case. It is then easy to see at a glance the varia- 

 tions of thickness, etc., each bed or set of beds goes through 

 between place and place. 



On the whole, we think that Dr. Newberry and his able assistants 

 have good reason to feel satisfied at having accomplished so much 

 minute and lasting work in so short a space of time, and we look 

 forward with interest to their final report. G. A. L. 



Harbottle, 19tli September, 1872. 



III. — Neues Jahrbuoh fur Mineralogie, Geologie und Pal^on- 

 TOLOGiK. Heft 6, 1870— Heft 2, 1872. 



ALL concerned in the progress of Geological knowledge must 

 recognize the high value of this repertory of new facts and 

 new ideas, whether discovered and expounded by our fellow- workers 

 of Germany, or selected and noted by them in this their excellent 

 Mineralogical and Geological Magazine, so well conducted by Pro- 

 fessors Leonhard and Geinitz. 



The "Jahrbiich" was commenced in 1830, by Professors Von 

 Leonhard and Bronn, and is a well-known work of reference to 

 geologists of all branches. Its original articles have always been of 

 great importance, and its notices of current scientific literature have 

 been indispensable to many a working savant. 



As formerly, so now, the " Jahrbuoh " keeps up its high rejDuta- 

 tion ; and, whilst it successfully labour's to advance Mineralogical 

 knowledge, which is cultivated in Germany far more ardently and 

 extensively -than in other countries, especially Great Britain, this 

 Journal has always contributed largel}^ to Palgeontology, Geognosy, 

 and all other branches of Geology. The following classified notice 

 of the papers that have appeared in the " Jahrbuoh " since our last 

 notice of the work (March 1, 1871) will show this very clearly. A. 

 Stelzner : On Quartz and trapezoedral faces ; a paragenetic sketch ; 

 and on the Granulite of Saxony. Websky : On the obtuse rhom- 

 bohedron and hemiscalenoedion in quartz crystals from Striegau in 

 Silesia. C. Klein : Mineralogical Notes (pi. viii.) : 1. Chrysoberyl 

 from the Smaragdum Mines on the Tokowaja; 2. Apatite from the 

 Obersulzbach Valley, in the Pinzgau, and from Poncione della 



