Revieivs — Geinitz's Neues Jahrbuck. 469 



are the actual conclusions of . geologists on these subjects, and the 

 grounds on which they are based. Were it not, perhaps, asking 

 too much of the authors of guide-books to request them to examine 

 for themselves the objects which they undertake to describe, we 

 would suggest, in the present case, a visit to Whitecliff" or Alum Bay, 

 where the pebbles which occur in numerous bands will be found to 

 have their longer axes vertical. 



Neither astronomers nor geologists can of course object to 

 " Parallax " and Mr. Jenkinson exhibiting their mental eccentricity 

 in volumes which are correctly labelled — volumes which we are free 

 to purchase or reject as we please — but we must strongly protest 

 against such nonsense being foisted upon us under the innocent 

 disguise of a ''guide-book." 



III. — Leonhard und Geinttz's Neues Jahrbuch riin Mineralogie, 

 Geologie und Paljeontologie, 1874-75. 



AS usual, and for many years past, the current literature of Geology 

 and associated sciences is well represented in this valuable 

 periodical ; and the researches of our fellow- workers in Germany 

 and elsewhere continue to enrich its pages with new facts and 

 theories. 



Jahrgang 1874, Hefte 1-9. — Besides the numerous communica- 

 tions addressed to the Editors by geologists and mineralogists from 

 every side, which often constitute memoirs in themselves, such as 

 the letter on the schillerquarz of Oberstein, etc., by Dr. H. Laspeyres, 

 — G. vom Eath's letters on foresite from the granite- veins of Elba, 

 and wollastonite in the phonolite of the Breisgau. — A. Knop's on 

 the segregation af silica and formation of oolite,- — E. Weiss's on the 

 Mansfeld weissliegende, — 0. Fraas's on fossils from Palestine, etc., 

 we find — 



In Palaeontology: — V. von Moller on Volborthia, a new genus of fossil Brachiopods 

 (pi. vii. part) ; and 0. Feistmantel on tlie Carboniferous Equiseta : — Equisetum 

 Schuetzeanum, 0. F. ; Eq. infundibuliforme, Brongn. ; Eq. priscum, Geinitz ; Eq. 

 giganteum (L. &H.) ; Eq. brevidens, Scliimper ; Eq. rugosum, Schimp. ; Eq. dubium, 

 Brongn. ; Eq. SocolowsJci, Eichw. ; Eq. radiatum (Sternb.) ; pi. vi. 



In Geology : — A. E. Tornebohm on the gneissic district of Sweden (pi. iv.) ; F. 

 DifFenbach on the Earthquakes (141) and Volcanic eruptions (Kilauea, Merapi, 

 Vesuvius, Maunaloa, and St. Vincent) of 1872; F. Maurer on some fossiliferous 

 Devonian rocks between Giessen and Friedberg (pi. vii. part) ; E. Cohen's geological 

 and petrographical notes on South Africa (pi. viii.) : I. Bibliography: II. Vicinity 

 of Cape Town; 1. the Granite, 2. the Diabase, 3. the Schists, a, the Lion's Eump ; 

 b, Sea Point; c, Platte Klip, 4. the Sandstone; Carl Naumann on the Hohburg 

 porphyry hills in Saxony — a woodcut and map (pi. v.) (the last work of the author, 

 and scarcely finished); Alb. Heim on the , Slickensides in the porphyry hills on 

 Hohburg; Th. "Wolf's geological notes on Ecuador : 1. The occurrence of quartz- 

 andesite in the highland of Quito ; 2. Geological Sketch of the Province of Guaya- 

 quil ; 3. A mud-volcano on the west coast of Ecuador ; and H. B. Geinitz's Obituary 

 of C. F. Naumann. 



In Mineralogy and Petrology: — C. Klein's Mineralogical notes: the optical 

 properties of the Sulzbach epidote (pi. i.) ; Burkart on the iron-meteorite of 

 Poblazon, Mexico (pi. ii.) ; Burkart on telkmc and bismuth minerals in the U.S. 

 of America ; Westphal on a porphyry vein, with loose orthoclase crystals, in the 

 Elbe valley district ; H. Mohl on the mineralogical constitution, classification, and 

 distribution of the phonolites ; A. Weisbach on roselite ; Websky on some remark- 

 able specimens of quartz from Neuhaus, Oberstein, Baveno, and Traversella (pi. iii.) ; 



