Excerpt from Preventing Contamination of Milk Introduction. - Investigation has shown that all of the troublesome changes that take place in milk and make it such a difficult product to handle properly are caused by bacteria. Page 221. Bacteria. - Bacteria are single-celled plants, so minute that several hundred of them placed closely side by side would equal only the thickness of ordinary writing paper. Page 221. Sources OF bacteria IN milk - Bacteria exist in immense numbers in the air, and in dust and dirt of every description, and for this reason it is difficult indeed to secure milk free from germs. Page 222. The effect OF bacteria ON milk. - Bacteria not only cause milk to sour in a short time, but they make it less wholesome, and often impart a bad flavor. 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.