392 Screntific Intelligence. 
Mn Mn Zn Fe H 
i. $ 59°94 6°58 21°70 25 bi aes: (5 
2. 2 61°57 4-41 20°80 ae 12°6 
Analysis 1 _ for the oxygen ratio of peroxide, oe 
and water 4:1 and the same is obtained from 2 after making 
deductions for i impurities present. This ratio gives for the for- 
mula 2 + Hs, or more exactly (¢Mn, 2Zu), Mn.+2H. In this case 
lated to wad and psilomelane. 
Chaleophanite is a result of the decomposition of franklinite and 
associated minerals. Found at the calamine locality at Stirling 
Hill, Ogdensburg, N 
Named from yaadnos brass and mairva to appear, in allusion to 
the change of at pies the mineral undergoes 7. ign ern 
—Am. Chem., July, 1875. 
18. Statistics of ‘Mines and Mining (Sixth Annual “R port); 
by Rosstrer W. Raymonp, U. 8. Commissioner of Min ing Sta- 
tistics. 8vo, pp. 585. Washington, 1874.—Dr. Ray monn’s Re- 
ports on see Mines and Mining in the States and Territories west 
of the Mountains now form a most valuable repository of 
scientific a technical literature on all topics germane to t is 
: e 
and Silver Smelting in Chicago; the Wyandotte Smelting and 
Refining Works; the Smelting W ‘orks of the Harz; the desilveri- 
zation of Lead by Zinc; avoidable Wastes of American Smelting 
Seems: Russel 9 Roastin ing-furnace; Brickner’s Cylinders; 4 
ae Laboratory; Sinking Shafts with the Diamond 
, &e 
reports have become an acknowledged authority on ~ 
subjects which they treat, and are remarkable for fairness aD 
accuracy of atte ‘Phew have for years been quoted an 
discussed, and i a large part translated in Germany, where t the 
ormation oF “Starch i in chlorophyll-grains se the “reed 
sake of pikats), under the action o’ , was made out by _—_ 
ten or twelve years ago, and been confirmed, and the con ad 
tions recently stu in various ay by Famintzin, Kraus, 2% 
starch is directly f ormed from carbonic acid under the action of 
light, i e., is a primary product of orcas Bohm, oh 
‘jenna, who contested this, but whose view according to 5 20% 
“has already been sufficiently refuted,” has aeaied to the su 
