📘 Excerpt from Journal für Gasbeleuchtung und Verwandte Beleuchtungsarten, 1861, Vol. 4: Organ des Vereins von Gasfachmännern DeutschlandsMan hat nicht nüthig zu warten, bis sich erst eine Gruphitkruste angesetzt hat, um dieses Resultat zu erlangen; auch darf man die Retorten ohne Gefahr abkühlen lassen wenn es durch den verminderten (lss - Consurn erforderlich wird.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.