By John Stevens Henslow
John Stevens Henslow (1796-1861), a scholar of Adam Sedgwick, grew to become Professor of Mineralogy at Cambridge in 1822. He quickly moved to a chair in Botany, and have become a instructor and mentor to Charles Darwin. This ebook on mineralogy was once first released in 1823. It was once meant to save lots of time at school by means of offering an simply obtainable connection with the composition of varied minerals in keeping with the rules of atomic conception, which was once then getting into the clinical mainstream. In that paradigm, research and exam of any mineral's composition concerned first ascertaining the mineral's straightforward molecules, either 'essential' and 'accidental', and moment, deciding on the proportions during which the basic parts mixed to shape the integrant molecule of the mineral. Henslow's e-book will curiosity historians of technology tracing the advance of atomic concept, and people operating extra largely within the background of college schooling and the highbrow weather of the 19th century.
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Tungstateof Berzel. Elhny. —Wolfram. Vauq. Klap. 2 i. Ox. 5 18. 9 Tung. Acid.... 77 65. 37. 22. 25 2. 5 18 JJTheory. Tune. 06 45. 60 ii. Prim. Right rectangular prism, in. —Amorphous, iv. G. 3. GENUS VIII. NICKEL. S. G. 93. Plates 4 inch thickMagnetic power of Nickel : Iron :: 1 : 4 nearlyor as 35 : 55 (Lampadius). Species 1. Native Nickel. in. Capillary. Species 2. Arsenical Nickel— Copper Nickel. Strom. Theory. Nickel . . 75 Iron . Lead . Sulphur LECTURES ON MINERALOGY. 21 HI. Six-sided prism ?
Right rhomboidal prism M. T. = 100°. in. J —amorphous, iv. G. 756. »» A SYLLABUS OF vi. Siliciferous—white, rose, and violet, ix. For clarifying and tinging glass—used for obtaining oxygen. Species 2. Sulphuret of Manganese, Vauq. Klap. 85 82 15 11 i. Mang Sulph in. Amorphous. iv. S. G. 95. Species 3. Carbonate of Manganese. Descot. Lamp. i. Ox. Mang 53. 48. Carb. A c i d . . 2 Ox. Iron 8. 1 Silex 9. in. Amorphous. iv. G. = 2 . 8 . Species 4 Phosphate of Manganese. Vauq. i. Ox. M a n g . . 42 ' Phos Acid 27 Ox.
1 100. Or, 1. Copper 2. 1. 2. 1. 1. 1. 1. Sulp Iron Sulp Iron Sulp Zinc Sulp. &c. "! 41. "I 14. 5/ • • » • • «• * J O . 30. 15. 4 + 1. 7 ii. Prim. Regular tetrahedron. in. Crystals—concretionary—amorphous. iv. G. 3154. ix. Mode of extracting the copper—In Cornwall, (1817), 73727 tons of ore yielded 6425 tons of copper. LECTURES ON MINERALOGY. APPENDIX- (a) Grey Copper Ore—Fahlerz. Kjaproth Copper 41. 1 Antimony Silver . • . 4 Sulphur 10. Loss 2. 48. 5 14 •» •5 10. 2. Thorns. 5 9 10! 2. 2 51. 1 •• (b) Black Copper Ore—Graugiltigerz.
A Syllabus of a Course of Lectures on Mineralogy by John Stevens Henslow