50 EXPERIMENT STATION. [Jan. 



and made water tight. Barns should not be located near wells 

 or springs when the water is to be used for either human or 

 animal consumption. 



Lead pipe should never be employed for conducting drink- 

 ing water ; in case it is in use its removal is urged and iron pipe 

 coated with asphaltum or galvanized iron pipe substituted. 

 Lead is a poison, and if it once gains access to the system it 

 is difficult to eliminate. The station frequently finds lead in 

 drinking water when lead pipe is used, and cases of lead poi- 

 soning are of common occurrence. Beware of lead pii^e ! 



(e) Miscellaneous, 



This division has co-operated with the Association of Official 

 Agi'icultural Chemists in a study of methods for the determina- 

 tion of the various ingredients in condensed milk. The results 

 have been rej^orted to the association. 



(/) Testing of Pure-hred Cows. 



The experiment station continues its work of testing pure- 

 bred cows for the various pure-bred cattle associations. This 

 work is often confused with the work of cow-testing associations. 

 The work is entirely different, in that pure-bred cows are tested 

 under the rules of their res^^ective associations, while the cow- 

 testing association is purely local, and may include any or all 

 breeds. One man is employed practically all of the time in 

 connection with the Guernsey, Jersey and Ayrshire tests, which 

 usually run for one year, it being necessary for the suj)ervisor 

 to visit the farms where the animals are on test once each month. 

 The Holstein tests are of much shorter duration, usually from 

 seven to thirty consecutive days, and require the presence of the 

 supervisor during the entire test. For this work it is necessary 

 to depend on men who cannot be regularly employed. Such 

 men are difficult to obtain, and there is at times considerable 

 trouble in obtaining men to fill all applications. 



During the past year 20 yearly Guernsey, 5 seven-day and 

 56 yearly Jersey tests have been completed. Eor the Holstein- 

 Friesian Association 63 seven-day, 5 fourteen-day, 10 thirty- 

 day and 1 forty-four day tests have been completed. There are 



