Download A Syllabus of a Course of Lectures on Mineralogy by John Stevens Henslow PDF

By John Stevens Henslow

John Stevens Henslow (1796-1861), a pupil 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 e-book on mineralogy was once first released in 1823. It used to be meant to save lots of time in school by means of offering an simply obtainable connection with the composition of varied minerals in line with the rules of atomic thought, 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 simple molecules, either 'essential' and 'accidental', and moment, opting for the proportions during which the fundamental materials mixed to shape the integrant molecule of the mineral. Henslow's publication will curiosity historians of technology tracing the advance of atomic conception, and people operating extra generally within the background of collage schooling and the highbrow weather of the 19th century.

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81° 23'. in. Crystals 7—fibrous—pulverulent — amorphous —stalactitic. Species 7. Carbonate of Iron—Spathose Iron —Brown Spar. Bert. Theory. Bayen Theory. Protox. Iron 57. 57. 6 1 Carb. Acid 35. 8 + 34 34. 1 Manganese... 5 &c. Magnesia . 5 Loss 1. II. Prim. Obtuse rhomboid P. P'. = 107°. HI. Crystals—fibrous—amorphous, iv. G. = 3 . 8. Species 8. Phosphate of Iron. Laugierr Theory, Cadet Theory. 2 > 1 • • . 25 &c. 3. &c. Alumina.. 5.. 1 18 A SYLLABUS OF Bert. Theory. Vauq. Klap Iron 43. 1 32. W a t e r .

Then. Theory. 75 + 1 i. 24 + 2 HI. Laminar—disseminated—amorphous, iv. G. = 3 . 4522. ix. Uses among the Turks—Paint—preparation of artificial orpiment. GENUS VI. MOLYBDENUM. S. G. = ?. to 8 . —Molybdic Acid. LECTURES ON MINERALOGY. 13 Species 1. Sulphuretof Molybdenum. Pell. Seybert. Bach. & Theory. i. Molybdenum,.. 9 Loss in. Crystals 2. Amorphous. iv. G. = 4 . 74. and Tungstic Acid. CHROME and Chromic Acid. TUNGSTEN GENUS VII. IRON. G. 788—Its great abundance and numerous uses—steel. Species 1.

5 78. 5 77. 6 1 22. 18. 25 &c 75 # # 1. • § 80. 18. Prim. Regular hexahedral prism. G. 452. Variegated vitreous copper. —Buntkupfererz. Klap. Theory. Klap. Gueniv. K- Copper... 5 38. 5 47. Sulph 19. 19. 5 13. 5 &c. Iron 5 • • 25. Silex 4. 5 7. lime Loss 26 A SYLLABUS OF Species 5. — Copper Pyrites. Copper Sulphur Iron . • • Zinc Chen. Lamp. Gueniv, SO. 12. 41. 30. 1 31. 1. •• Ox. Iron Silica Loss 53. 5. 1. 5 100. 1 100. Or, 1. Copper 2. 1. 2. 1. 1. 1. 1. Sulp Iron Sulp Iron Sulp Zinc Sulp. &c.

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