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157) A Table of the expansions of Metals, shewing how much a foot in length of each grows longer by an increase of heat corresponding to 180 Degrees of [[underline]]Fahrenheit's[[\underline]] Thermometer, or to the difference between freezing and boiling water, expressed in decimal parts of an inch. by Mr. John Smeaton. Gents Mag. Sept. 1755.p.401. where is a description of his Pyrometer. also Philos. Trans. Part. II. Vol. XLVIII.for 1755 [[right margin note]] specific gravity water = 1,000 [[end right margin note]] 1. White glass barometer tube__,01__glass very clear 3,150 2. Martial regulus of Antimony ,013________________________7,500 3. Blistord Steel__,0138 soft steel_______________________7.738 4. Hard steel______,0147____7,850 5. Iron____________,0151____7,644 6. Bismuth_________,0167____9,700 7. Copper hammer'd_,0204 copper not hamm________________________9,000 8. Copper, 8 parts mix'd with one of tin________________,0218____[[red ink]]8,813[[\red ink]] 9. Cast brass______,0225____8,100 10. Brass 16 parts, with tin 1__________________,0229 [[red ink]]Red is computed from their [[?]]imples_________________8,054 [[\red ink]] 11. Brass wire______,0232 fine brass_______________________8.350 12. Speculum metal__,0232. 13. Spelter solder,[[underline]]viz[[\underline]] lead 2 parts},0247[[red ink]]____9,927 [[\red ink]] zink[[strikeout]]tin[[\strikeout]] one________}[[bracket indicates inclusion with 'lead 2 parts' from above line]] 14. Fine pewter_______,0274___7,471 15. Grain tin_________,0298___7,320 16. Soft solder, viz lead 2 parts, tin one_______________,0301[[red ink]]_________________________10,000 [[\red ink]] 17. Zink, 8 parts, with tin 1, a little}_______________,0323[[red ink]]__________________________7,124 hammer'd______________}[[bracket indicates inclusion with 'a little' from the above line]] 18. Lead______________,0344___11,340 19. Zink or spelter___,0353___7,100 20. Zink hammered half an inch}_________________,0373___7,100 per foot____}[[bracket indicates inclusion with 'half an inch' from line above]] [[left margin notes]] Expansion & Contraction of several sorts of metal. see p.4.92,140.155. [[\left margin notes]] [[end page]]
Transcription Notes:
Page is written in table format.
Red ink is used to indicate special calculations.
Brackets are used in original page when not enough room on single line for all the elements being measured while maintaining table format.