46 research outputs found
The relation of the composition of petroleum to its origin and occurrence
Get PDFPetroleum Is a mixture of hydrocarbons. It is a liquid varying from colorless, through yellow and brown to black. It varies from 1.0 to 0.80 in specific gravity, which corresponds to 10° to 45° Beaume. It varies widely in physical properties, such as viscosity, ignition point, polarization of light, etc. Chemically it is composed essentially of carbon and hydrogen, but usually contains impurities such as sulphur and nitrogen. The carbon and hydrogen combine with each other to form certain series, or chains --Chemical and Physical Nature, page 1
Symmetries of Curves and Surfaces
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Iohn White's defence. In the behalfe of himself, his honoured commander, the lieutenant of the Tower and the other his fellow warders. Against a lying and slanderous pamphlet written by Iohn Lilburne, and intitled Liberty vindicated against slavery. The author of which pamphlet, is here reprehended for his slandering, taxed for his libelling, and incited (the spirit of disaffection abandoned.) to submit himselfe to his rulers, [brace] as he is commanded. To live in unity with his fellow commanders, [brace] as he ought.
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