IntelUsrence and Miscellanies. 38i 



-is 



nalural state, but of two teeth which accompanied them, one 

 seems to be petrified, having doubtless been in contact with 

 stone. The mammoth seems to have been an inhabitant of 

 nearly the whole northern hemisphere, its teeth or bones hav- 

 ing been found on both sides of North America, in Siberia, 

 in England, Scotland, Italy, and other European countries. 

 The remains, however, found in Ayrshire, and in various 

 parts of England, belong to a smaller species than that which 

 furnished these tusks. The Edinburgh Museum is indebted 

 for these valuable relics, to Lord Melville, who has never been 

 unmindful of its interests, when his official station enabled him 

 to do it a service. — Scotsman, Nov. 14. 



Foreign extracts, by Prof J. Griscom. 



26. Two kinds of Sulphate of Manganese. — When black ox- 

 ide of manganese is treated with sulphuric acid (as in prepa- 

 ring oxygen gas) and the mother water is evaporated, two 

 kinds of sulphates are obtained, distinct in their physical as 

 well as chemical characters. One of these sulphates crys- 

 tallizes in long prisms with four faces, perfectly white, trans- 

 parent, and truncated obliquely at their extremities ; — the 

 other is in the form of rhomboids and of a rose color. The 

 first contains a greater proportion of oxide than the second, 

 and is composed of water 28, sulphuric acid 28.66, and ox- 

 ide of manganese 43.34. The second is formed of water 

 44, of sulphuric acid 32, oxide of manganese 24. In the 

 latter, the sub. carb. of potash produces no change. In the 

 first it gives rise to a precipitate which appears to be a car- 

 bonated oxide of manganese, and which speedily becomes 

 brown by the action of the air. — Ferussac's Bulletin, Sept. 

 1828. 



27. Preparation of Hydriodic Acid; by M. W. Brandes. — 

 Dissolve 60 grains of iodine in a sufficient quantity of alcohol, 

 and add to it drop by drop, four ounces of water, in which 

 has been stirred an ounce of starch finely pulverised. When 

 the ioduret of starch has subsided, decant a portion of the 

 supernatant fluid. Into the remainder, pass a current of sul- 

 phuretted hydrogen ; this gas soon produces an orange yellow- 

 color, occasioned by the formation of sulphuret of iodine — the 

 color afterwards becomes a pure yellow, and finally disap- 

 pears entirely, the starch again becoming white. The liquid 



