Excerpt from The Dental Advertiser, Vol. 8: Buffalo, N. Y., January, 1877 Unscrew the stem in the upper reservoir two or three turns; after a few seconds, screw it down, leaving it about one-third of a turn from its seat; a flow of two or three drops of water in a second is amply sufficient to operate the apparatus. -'hen the mouthpiece is removed from the mouth, place it in a tumbler of water, and wash it out by letting the water run through it. By using a tumblerful of a strong solution of sal-soda occasionally, any deposit from the saliva in the tubes will be removed. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.