1910.] rUBLTC DOCUxMENT — No. 31. 67 



(<h AiDiJi/sls of DriiilriiH/ Walrr. 



Since the I'shihlislniicut of llic station in J8S2, sanitary 

 analyses ol" drinkini;' water lia\e heen carried out for pai'ties 

 within tli(^ State. Eegiimiiig Jan. 1, 1!)()^], free analyses were 

 (liseontiniied, and a eliarge of $8 a sample made. The reason 

 for this (diange was the fact that many pai'ties abused the privi- 

 leiic, and also because Avork of this character interfered with 

 legitimate experiment station work. The above charge must be 

 ])aid 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 ajiplication must first be 

 made, whereui)on a suitably encased glass jar, together with full 

 instructions for collecting and forwarding the sample, will be 

 forwarded by express. An analysis of water sent in shippers' 

 jars will uot be undei'taken, neither will bacteriological nor 

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

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

 pending upon wells and springs, to ascertain at a miniuium ex- 

 jiense whether their supply is free from such objectionable 

 matter as is likely to gain entrance from sink, barn or privy. 

 Such an examination is referred to as a sanitary analysis. 



Lead pipe should never l)e employed for carrying <lrinking 

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

 galvanized iron or iron coated with asphaltnm substituted. 

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

 nated only with the greatest difficulty. 



(e) Miscellaneotis. 

 Tn addition to the work already described, this division has 

 conducte<l 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 li;is uiade an investigation on the use of the Zeiss im- 

 mersion rcfractometei- in the detection of watered milk, the 

 results of which are likewise ])ublished in the present report. 



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



