Geology and Mineralogy. 389 



The main points of my article are x not touched by Prof. Steven- 

 IQB, except one, viz: in regard to the Tertiary elevation of the 

 Kt-«-k\ Mountains, in which, as he says, we agree. As to his Car- 

 boniferous and Trias>ic upheavals we differ. 



It is my intention to elaborate my views on the subject in the 

 Report of the Survey for 1876. 

 , D. C, April 18th, 1877. 



6. American Palwozoic Fossils. — Mr. S. A. Miu.er of Cincin- 

 nati, Ohio, proposes to publish a catalogue of the species of Amer- 

 ican Palaeozoic fossils arranged under each class in alphabetical 

 order, giving name of author, date and place of publication, strat- 

 igraphical position, and etymology of words. The prospectus 

 states that the volume will contain about 275 pages, and will be 

 ready for sale by the 1st of June next. Price, bound in cloth, 

 13.00. Mr. Miller should be addressed at No. 8 W. 3d street, 



i. Ohio. 



7. Palwontoyruphira. But ray: zar Xoturge.-chichte der Vor- 



tsgegeben von W. Dunker (of Marburg) und K. A. Zrr- 

 tel (of Munich).— It is proposed to issue the Palaeontographica 

 hereafter annually in volumes like the earlier, at a price not 

 exceeding 4;, shilfings (churlish) per year, payable at the begin- 

 ning of each year by Post Office order. The editors will have the 

 assistance of W. Bestecke, E. Beyeich, M. Neumatr, F. Homer, 

 and K. von Seebach, as a committee of the German Geological 

 Society. The 20 volumes of the first series, and 1 to 3 of the sec- 

 ond, may now be had at 50 per cent deduction from the original 

 prices, rf applied for at once. The publisher is Theodore Fisher 

 of Cassel, Prussia. 



8. Analyses of Japanese Porcelain-rocks, by Henrt Wurtz. — 

 The paper upon porcelains and porcelain-rocks from Japan, 

 by Mr. Wurtz. wu- i unber of this Journal 

 (p. 320). The following are some of the analyi- - -numi I in 

 the paper:— Analysis (1) is of a variety which has the native 



.,, /,/.- ft is one <>f the most valuable of the porcelain- 

 rocks found at Idzumiyama. It is a dull-white, porous, granular, 

 coherent mass, not unlike coarse chalk in appearance, though 

 much tougher.' It adheres to the tongue, with a chalky ta>te. 

 Several other varieties of somewhat different appearance, and 

 employed in different ways in the manufacture < 





very nearly the i 



This 



analysis (2) of the variety Shiro-chuchL 

 The only one which varies widely from these in chemi 

 K i i.uu-yama-chuchi, and for w 

 Wurtz coins the Kn_ 



below gives its composition (G. =2-653), and (4) the same after the 

 deduction .. . ^oft, chalk- 



like substance, with slightly unctuous feel; under a magmner it 

 appears to be made up of small, amorphous, transparent grains. 

 In water it falls to powder immediately. 



