5H 



.SCIENTIFIC RECOKD FOR \HSd. 



iiiid it is woll that, those, his jnost import.'iiit papers (miifibcrinf;- nearl , 

 one linndrod), should bo put in permanent form. The volume, con 

 tains also l)io;,^raphi(!al sketches by Dr. Marvin, Dr. Michel, nnd by tin- 

 late rrofessor Silliman. 



Of the works devoted to special departments of inincralojjy the 

 Trait /i <le ("rititallofjrdphie of I^iofcssoi- Mallard, of tlie "T'colc <U^s Mines 

 in I'aris, must be mentioned lirst. The first volume of this most vnlu- 

 able work was issued in 1870, and the second has followed <iuiiii;; ihe 

 I)ast year. The two vrlumes endtrace njnvard of a thousrind pM;;es, nnd 

 an atlas with numerous i)lat<\s a(;(!omi>anies them. It is the most ex- 

 haustive treatise upon crystallosrajihy and pliysical niineraloj;y which 

 has been ])ublishe(l in many years, and covers soiiu; branches of (he sub- 

 ject more fully than has ever been <1oih' l)efor<'. Dr. Ai-istides Ihvzina, 

 of Vienna, has i)ublished the first part of a work entitled Kryufdllo- 

 (/raphische Untcrsuchungen an homoJogcn vnd imme^en Rcihcn, ;i nienmir 

 which has received Ihe Baumsarluer ]»rize from the Vienna A<'iid(M]jy. 

 This part is devoted to a discussion of the methods of observation, 

 measurement of crystals, &e., and also the methods of calculation. 

 These tojnes are discussed with almost an excess of fullness of detnil. 

 Dr. Kuf;en Ilnssak, of Graz, has issued a work entitled AnleilinH/ zum 

 liefitmrnen der gcHlcinhildcnden Mineralien, which i)romises to be of value 

 to those who are esi)e(M!dly interested in the application of mineralo<;y 

 to i)etro.i;ni]thy. The excellent tables for the deteiniination of mineials 

 prei)ared by von Kobell, and of which 11 editions were issued Ijefoie 

 the death of the author, have been revised by K. Oebbelce, and a 12tli 

 edition published, with the additions which th<'! rapid develoj)ment of the 

 science has nuule necessary. 



The Encyclopedic Chimiqve., published at Paris under the direction of 

 M. Fr6my, contains two volumes which are interesting- to the mineral- 

 ojifist. The first of these is by L. liour^cois, on the artificial jiroductiou 

 of niiiu'rals. Thisis a subject to which French chemistshavemade impor- 

 tant contributions and upon which we already have an excellent French 

 woik (1.SS2) by MM. i^\)U(pi6 and L6vy.' This new volume is a valuable; 

 contribution, giving with unusual fullness the methods employed in ihe 

 syntiu'sis of min(u-als, with figures of the apparatus em]doyed, and then 

 the sj)e<;ial results obtained in the case of the different mineral species. 

 Another volume of this encyclopedia, by M. Meunier, is devoted to the 

 subject of nu^teorites. This is a large volume, i)rofusely illustrated, and 

 covering the whole subject very thoroughly. 



A second part has been ])ubliKhed of the work, by Tschermak, men- 

 tioned in t he last volume of this report, devoted to the illustration of the 

 microscopic structure of meteorites. This part contains eight jdates 

 devoted to (»li\iii(>, l)i()n/,ite, augile, and ]ilagio<'lase, &c. They sliowmost 

 satisfactorily the peculiar radiated structure which characteiizes these 

 minerals when forming the spherical gniiun so common in the chon- 

 dritic varietv of meteorites. 



