The Trials of Milking Machines, 1913. 
247 
of milk. We wish to record our admiration and thanks to all 
the officials connected with the trials for the excellent Organi- 
sation which we found on our arrival at Grange Hill, with 
special thanks to the Society’s Stewards, Mr. Ernest Mathews 
and the Hon. John E. Cross. Also to the Local Steward, 
Mr. Burkitt, who, with Mrs. Burkitt, showed us every kindness 
and hospitality. 
Our thanks are also due to the Society’s Engineer, Mr. F. S. 
Courtney, for his invaluable assistance with mechanical details. 
In concluding this report we must refer to the excellent staff 
of experts from the Reading University College who so ably 
undertook the bacteriological tests, and in mentioning this 
department I wish to lay great stress on the importance and 
completeness of their extremely arduous work. The Judges 
were very largely guided to their decisions by the results 
obtained by these gentlemen, and their report must be taken 
into consideration when reading this one. 
Bayntun Hippisley. 
Jas. Sadler. 
Bacteriological and Chemical Report upon the 
Samples of Milk obtained at the Milking 
Machine Trials, Bishop Auckland, April, 1913. 
In considering this report it is to be remembered that the 
object of the trials was to discover which of the competing 
machines was the best from all points of view. The perfor- 
mance of the machine in the milking of the cows and the 
principles of construction are of first importance. 
The bacteriological counts and the keeping quality of the 
samples obtained are subject to the influence of many factors ; 
such as the skill and attention of the operator in the daily 
cleaning of the milking vessels and their connections. The 
influence of these factors is great and therefore in awarding 
marks the general construction Was considered from a bacterio- 
logical point of view as well as the actual figures obtained 
at the examination. Taking all the varying factors into 
consideration we entirely agree with the decision of the 
judges. 
The milking machine trials began on the morning of April 
18 and were continued twice daily until the morning of the 
25th, on which occasion only two machines were left in and no 
samples of milk for bacteriological examination were taken. 
On all other occasions samples were taken from each cow as the 
milking proceeded, but those obtained on April 18 are excluded 
because the cows had not at that time got used to the machines. 
