484 FOODS AND FOOD ADULTERANTS. 



NOTES ox TABLE 18. 



As can be seen by the description of the samples, Table No. 18 con- 

 tains analyses of fairly good specimens of the prime steam lard of the 

 Chicago market. 



The specific g/avities of the samples are very near together, differing 

 in any case at most only .0014 from the mean. 



The variations in the melting point are more marked, and in Nos. 5003 

 and 5064 we notice results which are quite anomalo.us. In No. 5GC3 

 the melting point and crystallizing point of the fat acids are compara- 

 ble with the mean results, which leads to the suspicion of some inad- 

 vertent error in determining the melting point of the glycerides. The 

 mean refractive index is slightly higher than that for lards made in 

 other ways. The iodine number is also higher than for pure lards of 

 different origin, especially with the exceptions noted in table No. 18. 



When the rise of temperature with sulphuric acid, however, is con- 

 sidered, a lower number is obtained than in No. 17. The numbers for 

 single samples show a close agreement with the exception of 5029, one 

 of the two samples in the table not obtained in Chicago. 



As a general observation it may be stated that the steam lards of 

 commerce have a more constant composition than pure lards made in 

 other ways and from more restricted portions of the animal. 



Steam lards have a distinctively strong odor which distinguishes them 

 from lards rendered in open kettles at low temperatures and from se- 

 lected portions of the fat. 



Cottonseed oil. 

 No. 



5553. Cotton oil, from F. Whittaker & Sons, Saiiit Louis, Mo. 



5554. Yellow cotton oil, from Naphey & Co., Philadelphia, Pa. 



5555. White or refined cotton oil, same source as above. 



5615. Summer yellow, received from D. E. Fox. 



5616. Summer white, received from D. E. Fox. 



5618. From Z. D. Oilman, Washington, D. C.. marked Olive Oil Sublime. 

 &619. Cotton oil, same source as above. 



5625. Cotton oil, purchased in Boston, Mass. Affidavit of Walter L. Hill. 

 5628. Cotton oil, purchased in Saint Louis, Mo. Affidavit of D. H. Kennett. 

 5645. Prime cotton oil, from N. K. Fairbank & Co., Chicago, 111. Affidavit of Carl 

 Dreier. 



5647. Light yellow cotton oil, Maginuis Oil Works, New Orleans, La. Affidavit of 



Carson Mudge. 



5648. Light yellow cotton oil, purchased from Union Oil Company, New Orleans, La. 



Affidavit of Carson Mudge. ' 



5649. Light yellow cotton oil, purchased from Delta Oil Works, New Orleans, La. 



Affidavit of Carson Mudge. 



5661. Cotton oil. taken from car by C. H. S. Mixer, in Chicago, 111. Affidavit of C. 

 H. S. Mixer. 



5683. Summer yellow cotton oil, from Southern Cotton Oil Trust. 



5684. Summer white cotton oil, Southern Cotton Oil Trust. 



5685. Winter yellow cotton oil, Southern Cotton Oil Trust. 



5686. Winter white cotton oil, Southern Cotton Oil Trust. 



