46 
BULLETIN 57 ; U. S. DEPARTMENT OF AGRICULTURE. 
a reliable pump expert, plumber, or sanitary engineer, local prices 
of labor and materials and other conditions permitting. Enormous 
expenditures are being made by progressive cities in the installation 
of sanitary systems to protect the health of their people, and similar 
protection is surely due the country resident. It is urged, there- 
fore, that the questions discussed in this bulletin be considered of 
prime importance in planning or improving the farm- home, instead 
concrete: coyer 
^W 
Fig. 38.— Grease trap. 
of being postponed to a time when other matters do not press for 
attention. 
No costs of material or labor have been quoted, since these will 
vary with time and locality. Suffice it to say, however, that noth- 
ing- has been recommended in this bulletin which is not considered 
to be an economical investment for any progressive farmer. It is 
believed that convenience, comfort, and economy may be combined 
in the practical application of the suggestions made, providing com- 
mon sense and proper care are exercised in the installation, opera- 
tion, and maintenance of the conveniences. 
ADDITIONAL COPIES of this publication 
-£i- may be procured from the Superintend- 
ent of Documents, Government Printing 
Office, Washington, D. C, at 10 cents per copy 
