444 



OILS 



sider the relative value of seeds, and remember that oil and cake from any kind of seed 

 is of the tame value, it will be apparent that the yield is very different ; for example, 



T i o- iooc f East India linseed worth . . 52s. per quarter. 

 J uly 2o, 1 836, I p etersburg ft ueee t 485 . to 52s . 



P ncesofseed - 1 Odessa 525. 



The difference of 4s. must be paid for in the quantity of oil which at 38s. 6d. per cwt. 

 (the then price) requires about 11 Ibs. more oil expressed to pay for the difference in 

 the market value of the linseed. Another London crasher informed me that East 

 India linseed will produce 17 gallons, and he seemed to think that that was the ex- 

 treme quantity that could be expressed from any seed. The average of last year's 

 Russian seed should be about 14 gallons ; Sicilian seed, 16 gallons. 



' Rape-seed I have not turned my attention to the quantity of oil extracted from 

 this seed ; but a French crusher (M. Geremboret), on whom, I think, one may place 

 considerable dependence, told me, that 



3 Ibs. of best Cambray rape-seed yielded . . 1 Ib. of oil. 

 3| common rape-seed . . . . 1 

 4* poppy-seed . . . . 1 



1 Rape- seed yields from 52 Ibs. to 56 Ibs. per imperial bushel.' 



The following Table shows the quantity of oils obtained from some seeds, fruits, &c. : 



