286 



REPORT OF THE COMMISSIONER OF AGRICULTURE. 



■weight of the fat, and this divided by the weight of an equal volume 

 of water at the same temperature will give the specific gravity. 



If a specific-gravity bottle with a thermometer stopjjer, is used, the 

 temperature is obtained more readily, as the bottle is withdrawn from 

 the bath as soon as the desired temperature is observed. 



DETERMINATION OF THE SALT. 



Weigh out 5 grams of the butter in a tared beaker, melt and pour 

 into a bulb-separating funnel, and wash out beaker thoroughly with 

 boiling water. Shake funnel and contents and allow to stand and 

 settle. Run off the water and repeat treatment with alwut 50 cubic 

 centimeters boiling water. From 4 to 5 washings will remove all 

 traces of the salt. The solution is then titrated with a standard solu- 

 tion of silver nitrate, using a few drops of a saturated solution of po- 

 tassium chromate as an indicator. From the number of cubic centi- 

 meters of silver solution used it is easy to calculate the amount of salt 

 contained in the butter. 



Analyses of butter siibstitutes. 



Articles. 







7;i O 

 <* si 



II 



>,' 



1730 

 1751 

 17'53 

 1754 

 1755 

 1756 

 1787 



I>ard 



Beef suet 



Oleoinargariiic 



Neutral lanl 



Creamery butteriue* 



Oleofatt 



Country print 



. 90538 

 . 901»8 

 . 9ij4'j0 

 , 90309 

 . 90569 

 . 90287 

 .90561 



P.ct. 



0.08 

 0.25 

 9.3^1 

 7.43 

 11.69 

 14.23 

 14.45 



Per ct. 

 93. 59 

 92. 59 

 93. 59 

 90.00 

 92.90 

 93.35 

 93.72 



P.ct. 



0.41 

 0.22 

 0.12 



?:'^ 

 0.10 



0.09 



P.ct. P.ct, 

 0. 08 0. 00 



0.04 

 0.25 

 O.JO 

 1.53 

 0.08 



0.(X> 

 3.64 

 0.41) 

 2. .39 

 0.97 

 2.43 



.20 

 .10 

 .70 

 ..30 



4.30 

 .20 



1.90 



*40 per cent, butter fat, 15 per cent, oleo fat, 30 per cent, neutral lard, 

 t Average, 40 pounds per fat steer. 



Analyses of doubtful butters.* 



♦These samples were bought for pure butter. 



