PHYSICAL AND CHEMICAL EXAMINATION OF MILK 



143 



devised by Shaw and Eckles. This instrument differs from the 

 Quevenne in having a longer bulb and a finer stem. The spaces 

 representing units are lengthened and the reading is therefore 

 more accurate than on the Quevenne lactometer. 



Fig. 36. — Spence's 

 New York State lacto- 

 thermometer. 

 (A. H. Barber Creamery Supply Co.) 



Fig. 35. — Quevenne's 

 lactothermometer. 



Fig. 37. — Lactometer 

 designed for use in experi- 

 mental work (Bull. 134, B. 

 A. I.). 



The following table gives the relation of the Quevenne, 

 the New York Board of Health lactometers, and the specific 

 gravity: 



