The linear expansions are the mean values of the results of various experimentalists. The specific gravities are as given in Professor Rankine's _Applied Mechanics_. 8. Important Temperatures. Under the circumstances of-- deg. Water boiling at 212 Mercury boils at 660 Sulphuric Acid " 590 Oil of Turpentine " 560 Nitric Acid " 242 Alcohol " 174 A Saturated Solution of Salt " 218 Vital Heat 96 Olive Oil begins to solidify 36 Fresh Water freezes 32 Sea Water freezes 28 Mercury freezes -39 9. TABLE OF METEOROLOGICAL ELEMENTS, FORMING EXPONENTS OF THE CLIMATE OF LONDON. --------------------------------------------------------------------+ 1841 |Mean Height of Barometer, reduced to 32 deg. F., at the mean | to | sea-level. | 1861. | +--------------------------------------------------| | |Mean Monthly Range of Barometer. | Months. | | +---------------------------------------------| | | |Mean of all the Highest Temperatures. | | | | +----------------------------------------| | | | |Mean of all the Lowest Temperatures. | | | | | +-----------------------------------| | | | | |Mean Temperature. | | | | | | +------------------------------| | | | | | |Mean Temperature of Dew-point.| | | | | | | +-------------------------| | | | | | | |Mean Degree of Humidity. | | | | | | | | +----------------------| | | | | | | | |Mean Number of Rainy | | | | | | | | | Days. | | | | | | | | | +------------------| | | | | | | | | |Average Rainfall. | | | | | | | | | | +-------------| | | | | | | | | | |Average | | | | | | | | | | |Amount of | | | | | | | | | | |Cloud (10= | | | | | | | | | | | overcast). | | | | | | | | | | | +---------|