By John Stevens Henslow
John Stevens Henslow (1796-1861), a scholar of Adam Sedgwick, turned 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 used to be first released in 1823. It used to be meant to avoid wasting time at school through offering an simply available connection with the composition of varied minerals in response to the foundations of atomic conception, which was once then getting into the medical 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, making a choice on the proportions within which the fundamental components mixed to shape the integrant molecule of the mineral. Henslow's ebook will curiosity historians of technology tracing the advance of atomic idea, and people operating extra extensively within the historical past of collage schooling and the highbrow weather of the 19th century.
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Additional info for A Syllabus of a Course of Lectures on Mineralogy
III. 10 A SYLLABUS OF GENUS III. Species I. BORON. Boracic Acid. Gmelin. Berz. Theory. Boron... 4 74. 6 25. 4+ in. Mamellated incrustations, iv. G. 48. GENUS IV. Species 1. 1 2 SILICIUM. Silica—Quartz. II. Prim. Obtuse rhomboid P. P ' = 85° 45'. in. Crystals 13. Acicular—fibrous—granular— arenaceous—concretionary — stalactitic — pseudomorphous—amorphous. Rock Crystal—Amethyst, 97 . 5 per cent, of Silica —Milk —Rose— Smoky—Fat—Avanturine— irisated—ferruginous—Elastic. Silica . 9 2 < Water. 33^ Bucholtz.
Volcanic and Meteoric. 5. G. 4. Species 2. Peroxide of Iron. ore—fer oligiste. Hass, i. Iron Oxygen Specular Iron Theory. 36+ I 2 14 A SYLLABUS OF ii. Prim. Acute rhomboid P. F =86° 10'. in. Crystals 6—Lamelliform, iv. S. G. = 5. Species 3. Ore. Oxydulated Iron—Magnetic Iron Berz. Theory. I. Protox. Iron... 0+ Perox. 9+ I 2 Buch. Iron Oxyg 70 > 29 $ or i Protox. Iron. 5 I Perox. Iron . 5 II. Prim. Regular octohedron. in. Crystals 3. Lamelliform — Compact (native loadstone)—Earthy. iv. G. 4. vi.
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. S G. 352—Minium—Massicot—LithargeCeruse—Use in glass. Species 1. Native Lead. Species 2. —Native massicot. John. Theory. i. 6923 Protox. 5768 Per~ox. 803 Carb. 8462 Carb. Lead ... 825 Ox. 4808 and Lime) Copper trace Ferruginous) Silica ) in. Amorphous. iv. S. G. = 8. Species 3. Per-oxide of Lead—Native Minium. in. Pulverulent—amorphous.
A Syllabus of a Course of Lectures on Mineralogy by John Stevens Henslow