LESSON FOR THE FARM HOME 



L. H. BAILEY, Director 

 COURSE FOR THE FARM HOME, MARTHA VAN RENSSELAER, Supervisor 



n. NO. 31 



ITHACA, N. Y. 

 JANUARY i, 1913 



SANITATION SERIES No. 2 



HOUSEHOLD BACTERIOLOGY * 



MARTHA VAN RENSSELAER 



In the vegetable kingdom there are micro-organisms that are the smallest 

 ind simplest plants known. They live in soil and in water and are found 

 >n the surface of foodstuffs. Some 

 varieties prey on man and beast 

 id plant. They number hundreds 

 )f species, some of which are of 

 it value in nature's economy 

 ind of great benefit to man, while 

 )thers are sources of danger to 

 :he health of man and animal. 

 Dust is a conveyance of such 

 dcro-organisms. In itself dust is 

 ictically harmless, although it 

 itates the mucous membrane, 

 -atches furniture, worries the 

 [housekeeper, and occupies space 

 iceded for something else. We 

 :annot get rid of this old enemy; 

 [there will be dust as long as 

 there are people and furnish- 

 ings. Wind is an agent for dis- 

 tributing it. Housekeepers have 

 probably always asked the ques- 

 tion, " Where does all the dust 

 Iconic from?" 



THE DUST GARDEN 



Let us have some dust gardens 

 Ito study, and note what will be 

 [produced. A garden presupposes plant life. 



FIG. 24. Moving the dust and germs from 

 one place to another 



Every garden has weeds, as 



*The author is indebted for assistance in the preparation of this bulletin to Miss Maria Elliott, 

 Simmons College; Dr. V. A. Moore, Dean of the New York State Veterinary College; and R. A. Pearson, 

 [formerly Commissioner of Agriculture for New York State. 



Published semi-monthly throughout the year by the New York State College of Agriculture at 

 Cornell University. Entered as second-class matter October 13, 19x1. at the post office at Ithaca, 

 N. Y.. under the Act of Congress of July 16, 1894. 



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