(72) 



such compounds being known as glycerides. They are of 

 the greatest and most extensive use to man as foods, for 

 lubrication and illumination, and in the making of paints 

 and soaps. They can be removed by dissolving in various 

 substances, especially in ether, or by boiling or melting 

 in hot water, from which they may then be skimmed off. 

 A great many oils are extracted by pressure, the seeds 

 containing the oil being pressed between plates, which may 

 be heated or not, according to the circumstances. 



Numbers 161 8-1625 represent coconut oil. Extracted 

 from the seed of Cocos nucifera L. (See No. 441 .) 



1618. Copra. — The dried kernel of the coconut, as prepared for export. 



1619. Another sample of the same. From the Philippine Islands. Presented 



by E. B. Southwick. 



1620. Coconut oil, No. I. The oil, of first quality, expressed from the preceding. 



162 1. Shipment coconut oil. A rather poor grade of the same. 



1622. Refined coconut oil. The crude oil purified by a process of refining. 



1623. Another sample of the same. Presented by Merck & Company, of New 



York. 



1624. Coconut oil cake. — The cake or pumice remaining after the oil has been 



expressed. Largely used as a cattle food. 



1625. Coconut oil meal. The preceding, ground for use as cattle food. 



1626. Suberin. — A fat-like substance extracted from cork. 



1627. Hemp seed. — The fruit of a variety of Cannabis sativa L. (See No. 55°-) 



1628. Hemp seed oil. — The oil expressed from the preceding. 



1629. Poppy seed. (See No. 1448.) From the New York drug market. 



1630. Poppy seed oil. The oil expressed from the preceding. 



163 1. Rape seed. (See No. 1524.) From the New York drug market. Presented 



by H. H. Rusby. 



1632. The oil expressed from the preceding. 



1633. Rape-seed meal. — The ground cake or pumice remaining after the expression 



of the above oil, ready for use as cattle food. 



1634. Black mustard. (See No. 1519.) 



1635. White or yellow mustard. (See No. 1522.) 



1636. Expressed or fixed oil of mustard. — The fixed oil expressed from the above 



seeds. 



1637. Mustard dross. — The finely broken shells of white mustard, obtained as a 



by-product when the seeds are ground. 



1638. Carolina olive. Buffalo-nut. — The fruit of Pyrularia pubera Michx. (San- 



talaceae — Sandalwood Family). Native of the southeastern United 

 States. Collected in 1904, in the mountains of North Carolina, by A. M. 

 Huger. The expressed oil is used as a substitute for olive oil. 



1639. Sweet almonds. — The seed of Amygdalus communis L. {Drupaceae — Plum 



Family). Native of Persia and cultivated. From the New York market. 



