Mineralogy and Geology. eas | 
42 
_ ted with the coal. The coal was thrown on a filter, Washed, boilec 
* with alcohol and the alcoholic filtrate distilled. . The regidue/in the 
retort was shaken with a few drops of a solution of caustic potash and 
about an ounce of ether. The etherial solution evaporated on a Wateh _~ 
glass gave a mass in which the presence of strychnine was easily de- 
tected by the test above given.—Ann. der Chemie und Pharmacie, 
Ixxxiii, 3 
Il. Mineratocy anp GEouoey. 
_ 1. On Diopside and Molybdate of Lead, furnace products; by 
J, Fr. L. Hausmann, (Acad. Sci. Gottingen; L’Institut, No. 956, April 
28, p. 131.)—The crystals of diopside were from a Swedish furnace at 
Gammelbo in Westmannland. They are two or three lines long ; 
translucent or transparent; grayish-pearly to greenish or reddish-gray. 
teale?. H,— 6 C iti 
Si Xl M Ca Fe . Mn Na K 
54°69 154 15°31 23°56 0°08 1-66 194 1:15=100 
corresponding to the general formula, R? Sit. : 
The molybdate of lead was found in a reverberatory furnace at Blei- 
lee +s easily obtained, looking lik 
Brochantite (subsulphate of copper) is easily obtained, looking lu : 
Native specimens, by putting a piece of porous imestone In oy ae Mee 
@ saturated solution of sulphate of copper. The sp cocncostcdag — : 
Upon the limestone in small crystalline tubercles along with crystals o 
| ie (Gu G+GuH) may be obtained by the reaction of coarse 
Porous limestone on a solution of nitrate of copper, markin 12 or 
15°, and when the action ceases, by plunging the mass into a solution 
