VARIATIOX OF TOTAL SOLIDS 



No. of 

 Anal_\'- Water 



ses 



Fat 



Human 107 



Mare 50 



Buffalo : 8 



A55 : 7 



Cow I 703 



Ewe 32 



Goat i 38 



Sow j 8 



Hitch 28 



Flephant 3 



Hippopotamus ' i 



Camel 3 



Llama | 3 



87.41 

 go, 78 

 82 25 

 8q 64 



87 17 

 So. 82 

 85 71 

 84.04 

 75 44 

 7Q.30 

 90-43 

 86 . 5 7 

 86.5 s 



3 ■ 78 



I 21 



7-51 



1.64 



3 69 



'). 



4 



4- 



:). 



3. 



4 



3 °7 



3- 15 



Casein 

 and W- 

 humen 



Milk- 

 su.t'ar 



6.21 

 67 

 44 

 99 

 88 



91 



46 



-3 



3 09 



8.59 



4.40 



5 50 

 S.60 



Ash 



Specific 

 Gra\itv 



80 



r .0270 

 I 0347 

 I 0350 

 I 0345 

 I 03i() 

 I o.ui 

 I .0328 

 I 038 

 I 035 

 I 0313 



I .042 

 1 . 034 



Variation of Total Solids. — As applied to milk, " Total 

 Solids," is a term that includes fat. casein, album.en, suo-ar, 

 and ash; in other worrls, all the milk constituents except the 

 water. " Solids Xot Fat " is a term often used, and includes 

 the casein, albumen, sugar, and ash, or all the milk constituents 

 except water and fat. " Serum " is a term used to designate all 

 the milk constituents except the fat. The fat is the jnost \-al- 

 uable constituent of the total solids. The variation in the total 

 solids of milk during the summer months is shown in the table 

 quoted below from Dr. \'an Slyke of (ienex-a, Xew ^'ork: 



ilonth 



I\ray 



June 



July 



August . . 

 September, 

 October. . . 



Per Cent ■ Per Cent of 

 of Water ■ Total Solids 



Dr. Van Slyke also studied the effect of the lactation period 

 upon the total solids in milk. A herd of fift}- cows, calving in 



