270 Mr Y oung on the preparation of Opium. 
Comparative View of the experiments of Messrs Ball, Howie* 
son and Young, for ascertaining what quantity of Opium 
might be prepared in Britain. 
Mr Ball, from 576 square feet, or 1 fall and 28 ^ acre. 
square yards, obtained about 0 4 0 0 
Dr Howison from about five falls, obtained 0 8 4 0 
In 1817, Mr Young, from 1 fail and 14 square 
yards, containing 1800 plants, obtained 0 4 0 0 
According to Mr Ball’s method, 1 fall produced 
2 ounces and 2 drachms, or, 22 8 0 0 
According to Dr Howison’s method, 1 fall pro- 
duced 1 ounce 5 drachms, and 36 grains, or 17 0 0 0 
By Mr Young’s method, 1 fall produced 2 
ounces 7 drachms 2 grains and J, or 28 12 6 24 
In 1818, Mr Young, from 1 fall obtained 5 
ounces 6 drachms 4 grains and -f-, or 57 9 4 48 
Explanation of the Figures. 
Fig. 1. represents the skeleton of the poppy, and shows the 
anastomosis of the lactiferous vessels, ramified between the ex- 
ternal and internal rind of the capsule. 
Fig. 2. represents a vertical section of the poppy. 
Fig. 3. represents a transverse section of the poppy. 
Fig. 4. represents the double longitudinal and oblique inch 
sions upon the external rind of the poppy. 
Fig. 5. represents the poppy with the points of the star or 
capital cJut off, and a thin slice of the external rind round it. 
Fig. 6. represents the double bladed convex edged knife, with 
a brusli at one end for gathering the milky juice. The blades at 
the other end are covered with a shield, except as much of the 
edge as is necessary for woclnding the external rind of the cap- 
sule. The blades should be three inches long. 
Fig. 7. represents a tin fiask, with a slip of tin across its 
mouth for scraping the brush upon, and for holding the milk. It 
shoiild be six inches long, four broad, and one inch wide at the 
mouth **'. 
Edinburgh, May 1819. 
* The Society of Arts have recently voted to Mr Young the Gold Isis MedaS 
for his improved mode gf collecting British Opium. — E d. 
