Dairy Supplies 
O* &. B, Purity Pasteurizers 
These machines represent the last 
word in efficiency. Made in sizes from 
20 to 300 gallons, they are constructed 
of the finest materials. They have a 
patented method of heating that re¬ 
sults in a finer quality of milk processed. 
We solicit an opportunity to acquaint 
anyone interested with their many points 
of superiority. They are available in 
both round and oblong models. 
Constant improvement in the com¬ 
plete O. & B. Purity line of milk han¬ 
dling equipment has been the order of 
the day since the factory was started 
in 1873. Improvements in the pasteur¬ 
izer line have been especially noticeable, 
particularly since these machines are 
coming into such extensive use. After 
all, the important thing in pasteurizing 
is the quality of milk which you can 
deliver to your customer. Most pas¬ 
teurizers will comply with the law in 
general features, but they are more 
liable to spoil the flavor and change the 
cream line. 
O. & B. Purity Pasteurizer 
The American Dairy Recording Thermometer 
Every day the bulb of your Recording Thermometer must be removed, cleaned, and 
replaced. Only the American is provided with a flexible, stainless steel stem, proof against 
corrosion and breakage. Investigate before buying. 
JOHNSTON 
CROSS-TUBE VERTICAL 
BOILERS 
These Boilers represent a radical advance in Boiler construc¬ 
tion. They have all the good points of vertical-tube Boilers and 
avoid many of the faults found in others. They have a large 
fire-box, allowing more perfect combustion, resulting in greater 
economy; no flues to brush out, therefore easier to take care of. 
The tubes are always submerged in water which results in longer 
life. These Boilers are made in sizes from 3 to 22 h.p. 
We also sell the familiar O. & S. Boiler, which needs no introduction, in both 
vertical and horizontal models of all sizes 
W. E. BARRETT CO., Providence, R. I. 
Dairy Supplies 5 5 
