Note-The experiments of Mr. Hodgkinson, from which the moduli of rupture of stones contained Imperial gallons in a litre --1.5077222 =39-37079 =1.5951741 =3.2808992 =0.5159929 =10-764297 =0.024711 =2.20548 =0.3435031 =0-2200967 Lbs. per square inch in 1 kilogramme per square millimètre =1422 =12.7 Grains in a cubic inch of distilled water, Bar. 30 in., Th. 62° =252-458 Cubic inches in the imperial gallon Feet in a geographical mile Log. of ditto. =1.73298 =277.276 =6075.6 =3.7835892 To find the weight in lbs. of 1 foot of common rope, multi ply the square of its circumference in inches by Ditto for a cable Note.-The numerical values of the function of in this table were calcu lated by Mr. Goodwin. These, together with the numbers of cubic inches and feet per cwt. or ton of different materials, are taken from the late Dr. Gregory's excellent treatise, entitled Mechanics for Practical Men. The other numbers of the table are principally taken from Mr. Babbage's Tables of Logarithms and the Aide Mémoire of M. Morin. 044 to 046 ⚫027 THE END. |