POPPY SEED. 269 



Mustard Seed. — The seed of a species of Mustard, Si- 

 napis glauca (Nat, Ord. Crucifera), is very largely imported 

 from the East Indies for the expression of oil; it is a small, 

 round, brown seed, very closely resembling rape-seed ; it is 

 probably mixed with other species, as S. Toria and S. nigra, 

 natives of the East Indies. 



Cotton Seed. — The seeds of Gossypium herhaceum 

 (Nat. Ord. Malvaceae) are often imported for expressing; 

 the oil they yield is used as a substitute for olive oil. 

 Cotton-seeds are about the size of small peas, of a deep brown 

 colour ; they are usually loose, but sometimes come just as 

 they are taken from the capsules, that is, they are held in 

 kidney-shaped clusters, four of which, with the cotton, occupy 

 each capsule ; each cluster contains about ten seeds. The 

 imports have hitherto, been small, and always from the United 

 States of America. 



Poppy Seed (Papaver somniferum, Nat. Ord. Papave- 

 racece) is often imported from India and the European 

 Continent ; the oil expressed from it is so bland and sweet, 

 as to equal the finest produce of the olive. In Erance, 

 where it was first introduced, poppy-seed oil was subjected 

 to a prohibitory decree, owing to the mistaken idea, ftiat, 

 being derived from the same poppy-heads that yield opium, 



