Excerpt from Composition of the Vapour and Liquid Phases of the System Methane-NitrogenThe problem - now a commercial one - of the separation of helium from natural gases bears a resemblance to the recovery of argon from the atmosphere. Helium occurs in re richest natural gas wells in about the same proportion - 0-9% - ~as argon does in the atmosphere. And its separation at present is being effected in a similar way. Viz by the method of liquefaction and rectification.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.