Correspondence Autogenous Healing of Concrete in Compression

The following meetings have been arranged:-

The President introduced the Authors, who then presented their paper.

GASHOLDERS date back to the days of A. V. Lavoisier when in about 1781, he invented a laboratory instrument consisting of an inverted bell which was free to rise and fall in a tank of water. Gas was stored under the bell and over the water, and as the rise of the bell could be calibrated to indicate the volume of gas, we have the origin of the word “Gasometer.” W.R. Garrett