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 at school through offering an simply obtainable connection with the composition of assorted minerals in accordance with the rules of atomic idea, which used to be then coming into the clinical mainstream. In that paradigm, research and exam of any mineral's composition concerned first ascertaining the mineral's easy molecules, either 'essential' and 'accidental', and moment, picking the proportions during which the fundamental elements mixed to shape the integrant molecule of the mineral. Henslow's ebook will curiosity historians of technology tracing the advance of atomic thought, and people operating extra greatly within the background of collage schooling and the highbrow weather of the 19th century.
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Extra info for A Syllabus of a Course of Lectures on Mineralogy
1. 7 34. 43. 5 2. 6. 3 II. Prim. Regular octohedron. in. —granular—amorphous. iv. G. = 4 . 0 3 . 20 A SYLLABUS OF Species 13. 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.
Right rhomboidal prism, in. Crystals—amorphous, iv. G. 51. Species 5. Bi-sulphuret of Iron. Iron pyrites. Hatchet. Theory. i. 66 Sulphur. 15 52. 33 Bucholtz Theory. Proust Theory. Iron . . 06 1 Sulphur. 64 II. Prim. Cube. in. Crystals 40. Amorphous—pseudomorphous. iv. G. 8. vi. White Iron pyrites. Hatchet Iron Sulphur Theory. 18 + Arsenical Iron pyrites—Auriferous. LECTURES ON MINERALOGY. 17 Species 6. Sulphate of Iron—Green vitriol. Berg. Theory. i. 6 + 4 II. Prim. Acute rhomboid P. P. = 81° 23'.
Var. 6. G. = 2 . 8 8 . Hexahedral-S. G. 5. Trihedral—S. G. 2. G. 2—Capillary, Haematitic—Wood copper. Amianthiform. Species 14. Martial Arseniate of Copper. Chenev. i. Ox. 5 Arsenic Acid ... 5 Ox. 12. Silica 3. in. Crystals % Specks 15. —Dioptase Crysocolla—Emerald copper. Klap. Theory? Lowitz Theory ? John. i. 8 + Car. 17 12 Sulp. Lime.... 42. 37 3. 8 8. 29. 8 3. II. Prim. Obtuse rhomboid P. P'. = 126° 17'. in. Crystals. iv. G. 3. Species 16. Selenfriretof Copper? 32 A SYLLABUS OF GENUS XII. LEAD.
A Syllabus of a Course of Lectures on Mineralogy by John Stevens Henslow