32 STATE NORMAL SCHOOL^ SAN JOSE. 



4. Sewage problems. 



a. Disposal of excessive waste of certain industries ; canneries ; creameries ; 



refineries. 



b. Oyster bed pollution. 



c. Contamination of water supply of adjacent cities, 

 n. Provision made by the city for sewage disposal. 



Field Work. 



1. What is the extent of the sewer system of your city? (Ask the Street Depart- 



ment. ) 



2. What parts of the city are still unconnected? (Learn the reasons.) 



3. Does that part of the city have any higher death rate? (Learn from the Health 



Department.) 



4. AVhat is the method of sewage disposal in your city? 



a. What better way could be used? 



b. Is there any objection to the method in use? If any, what? 



5. What are the ordinances governing the location of sewers in your city? 



(J. What is the attitude of city officials regarding prompt connection of houses with 

 the sewer system? 



7. Learn the cost of disposing of the sewage of your city. (Ask Superintendent of 



Streets.) 



8. Why is the fact that a part of the town is not connected with the sewage system 



of interest to you? 



References. 

 Pupils' Readings. 



Gerhard, W. P. "The Sanitation, Water Supply and Sewage Disposal of Country 



Houses." 227 ff. 

 Bulletins of State Board of Health, 6: 480. 

 City Charter and City Ordinances. 

 American City, 8: 10 — Mebus, C. F. "Sewage Treatment Plant and Other 



Borough Improvements of Chambersburg, Penn." 

 Hearst's Magazine, 28 : 23G-43— Young, Pt. "The Lair of the Plague Tiger." 



For Student Teachers. 

 Nelson's Cyclopedia. 



Sedgewiek. "Principles of Sanitary Science." 171 ff. 

 World Today, 20: G05 — Bergenger. "The Purification of Sewage." 

 American City, 8 : 488— "The Ilydrolytic System of Sewage Tanks." 

 American City, 9 : 549 — Gregory, J. H. "Separate or Combined Sewers and Their 



Relation to the Disposal of Sewage." 

 American City, 9 : 111-15— Hcring, Rudolph. "How to Attack the Sewage and 



Garbage Problem." 

 Technical World, 20: 374 — Brook, Benj. "How Bacteria Keep Us in Health." 

 Technical World, 20': 717 — Middleton, P. H. "To Keep Typhoid Out of Xew 



York Harbor." 

 Bulletins of State Board of Health, 7: 125-9— Baker, N. D. "Septic Tanks." 

 Bulletins of State Board of Health, G : 542 — Hyde, C. G. "A Review of Some 



Available Methods of Sewage Treatment in California." 

 Bulletins of State Board of Health, (i : 564 — Baker, N. D. "New Developments in 



Sewage Purification in California." 

 Bulletins of State Board of Health, : 570 — Moore, C. E. "The Sewage Disposal 



Plant at Santa Clara." 

 Bulletins of State Board of Health, 8: 2G4— Hyde, C. G. "A Review of Some 



Available Methods of Sewage Treatment in California." 

 Bulletins of State Board of Health, 8 : 278— Baker, N. D. "Septic Tanks." 



