Excerpt from Methods of Practical Hygiene, Vol. 1 of 2 I experienced great pleasure when Professor Crookes informed me that he was desirous of executing an English version of my book. I have consequently spared no trouble in carefully revising the text, taking into consideration the most recent advances Of science up to the latest date, and, as far as lay in my power, supplying the deficiencies which I had previously detected. The bacteriological chapters have undergone considerable remodelling in small details, in accordance with the most recent investigations; many addi tions have been made to the sections on Dwellings and Disinfection. N 0 portion has been left entirely unmodified. I have sought to avoid the introduction Of too many supple mental details, since the purpose Of such a work requires exposition of the principles Of research and recognition rather than the accumulation of endless details. Even as it is, a sufficient abundance has been introduced. A strict objectivity in the conflict Of the opinions of different schools has also been prominently before my mind. I know full well that, even in the present improved form, numerous quest-ions have remained untouched, or have only been noticed in passing, although they may occasionally concern the sanitarian. Absolute completeness can scarcely be combined with a modest bulk. 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.