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Encyclopedia Americana, Volume 8

Sir Davy
Davy, Sir Humphry, English Chemist: B. Penzance, Cornwall, 17 Dec. 1778; D. Geneva, Switzerland, 29 May 1829. A Taste For Chemis Try, Which He Displayed In Some Experiments On The Air Contained In Sea-weed, Attracted The At Tention Of Mr. Gilbert, President Of The Royal Society, And Dr. Beddoes, And ...

Symbols And Approximate Angles
Symbols And Approximate Angles. Finding The System Of A Crystal.—the Following Rules Quickly Determine The Of A Crystal, Without The Need Of A Complete Determination Of Symmetry Or Any Consideration Of Axes. Approximate Measurements Are Usually Needed. Essestiol Cowelition Systetst More Than One Axis Of Three-fold Isometric. Symmetry. One Axis ...

Tee Itomogeneous Interttal Structure
Tee Itomogeneous Interttal Structure Of Tals. That There Exist In Crystals Some Homoge Neous Internal Structure Has Been Sufficiently Illustrated. The Further Consideration Subdi Vides Into (a) The Kinds Of Homogeneous Crystal Structure Possible, (b) The Nature Of The Struc Tural Unit. The Possible Varieties Of Homogeneous Crystal The Discussion ...