;', 831 



Carbon. Hydrogen. Oxygen. 



Lard oil 79.03 11.422 9.548 



Sperm oil 79.05 11.6 8.9 



It will thus be seen that the difference in carbon is only 

 3.00 ; about the same in hydrogen ; while in oxygen it 

 is about 4.10 in favor of the lard oil. The large quanti- 

 ty of carbon proves that it may be relied on as a material 

 for giving light, as it is well ascertained that whenever 

 carbon predominates in an animal oil the article is capable 

 of a high degree of luminous power. Experiments have 

 been made which resulted in favor of lard oil. About 

 sixty pounds in a hundred of good lard, in tallow, only 

 twenty-eight is oil ; and the processes of manufacture re- 

 sorted to, show that it may be made a profitable business. 

 Large orders have already been executed at the West for 

 this oil, to be used in the Eastern states. 



The importance of this application of lard, can scarcely 

 yet be realized. Vast quantities of the oil can be manu- 

 factured at the West. Indeed, there is hardly any as- 

 signable limit to the power of production of the article, 

 so that, while the demand continues, the business may be 

 conducted profitably. The immense herds of swine which 

 can be suffered to range over the lands adapted to them, 

 and gather their food from mast, as well as the surplus of 

 corn, wheat, potatoes, etc., on which they may be sus- 

 tained, admit of the manufacture being carried on to al- 

 most any extent. 



The proportion of lard to the whole hog is about sixty 

 per cent., after taking out the hams and shoulders, or tak- 

 ing out the hams only ; the estimate for hogs of the best 

 breeds, and so fed as to produce the greatest quantity of 

 fat, is seventy per cent. As the object is not in this case 

 to make pork for food, the objection against those species 

 of nuts, and other modes of feeding, which render the an- 

 imal more gross and oily, is obviated ; and it has been 



