I'JIO.] PUBLIC DOCUAffiNT — No. 31. 67 



(d) Aitalijsis of Drinl-iiig Water. 



Since the estal)lishinent of the station in 1882, sanitary 

 analyses of drinking water have been carried ont for parties 

 within the State. Beginning Jan. 1, 1!)03, free analyses were 

 discontinned, and a charge of $3 a sample made. The reason 

 for this change was the fact that many parties abused the privi- 

 lege, and also becaiKe w^ork of this character interfered with 

 legitimate experiment station work. The above charge must be 

 paid when the sample of water is sent. During the year 91 

 samples have been tested and the results promptly reported. 



In order to secure an analysis application must first be 

 made, whereupon a suitably encased glass jar, together wdth full 

 instructions for collecting and forwarding the sample, will be 

 forwarded by express. An analysis of water sent in shi])pers' 

 jars will not be undertaken, neither will l)acteriological nor 

 mineral analyses be made. The object in offering to make an 

 examination of water is to enable the citizens of the State, de- 

 l)ending upon wells and springs, to ascertain at a minimum ex- 

 pense Avhether their supply is free from sntdi objectionable 

 niatter as is likely to gain entrance from sink, barn or iu"ivy. 

 Such an examination is referred to as a sanitary analysis. 



Lead pipe should never be employe<l for carrying drinking 

 water; in case it is in use it should be removed at once, and 

 galvanized iron or ii-on coated with asphaltuni substituted. 

 Lead is a poison and after it has entered the system it is elimi- 

 nated only with the greatest difficulty. 



(e) Miscelhineous. 



In addifinn to ihe work already described, this division has 

 eondueted investigations and made other analyses as follows: — 



1. It has co-operated with the Official Dairy Instructors 

 and Investigators Association in a study of the Babcock test, 

 the results of which are published elsewhere in this report. 



2. It has made an investigation on the use of the Zeiss im- 

 mersion refractometer in the detection of watered milk, the 

 results of wdiich are likewise published in the present report. 



3. It has co-operated with the Association of Oflicial Agri- 



