58 



HATCH EXPERIMENT STATION. 



[Jan. 



and in that of domestic animals, as well as in many waste 

 waters. Excess of chlorine would therefore make it clear 

 that a water contained sewage of some kind. 



It is impossible, from a chemical analysis, to say whether 

 or not a water is contaminated with the specific germ of any 

 contao-ious disease. This is the work of the bacterioloo-ist. 



Character of Waters tested. 



We have tested for farmers during the year 124 samples 

 of water. Of these, 81, or 65.3 per cent., were found safe; 

 18, or 14.5 per cent., rather suspicious ; and 25, or 20.2 per 

 cent., dangerous for drinking. Five samples contained very 

 noticeable quantities of lead derived from the lead pipe 

 through which the waters flowed. Soft waters are espe- 

 cially liable to take up the lead. Every one is cautioned 

 against the use of lead pipes, as waters containing this sub- 

 stance are very injurious to the health. 



Samj^le Analyses of Different Waters. 



QUALITY OF WATER. 



Excel! eut, . 

 Good, . 

 Suspicious, . 

 Dangerous, 



Parts per Million. 



5.00 



3.00 



4.00 



19.00 



7.00 



8.00 



18.00 



38.00 



22.00 



35.00 



22.00 



2.00 



70.0 

 70.0 



-t 



104.0 



-t 



-t 



-t 



336.0 



-t 



-t 



-t 



84.0 



46.0 

 32.0 



-t 



54.0 



-t 



-t 



-t 



186.0 



-t 



-t 



-t 



22.0 



Clark's 

 Degrees. 



-t 



1.43 

 5.43 

 3.25 

 1.11 

 1.26 



-t 

 10.15 



-t 

 5.71 



-t 

 2.47 



* None. 



t Not determined. 



It was not considered necessary to publish the analysis 

 of each water analyzed during the year. 



