Rumex Crispus — Yellow Dock. 405 
Soda, 19753 
Sodium, ...---- 3*368 
Chlorine, 5-130 
Sulphuric acid, ------ 5"085 
Organic acids, ------ 9*200 
96-896 
100 grs. of fresh stalks gave of 
Water, 83-80 
Dry matter, 16-20 
Ash, 1-48 
Organic matter, 14-72 
Ash calculated dry, ----- 9-512 
Organic matter calculated dry, - - - 90*488 
Root perennial, fusiform, yellow, having from 3 to 5 rows of root- 
lets extending its whole length, slightly spiral in their course, cov- 
ered with a loose epidermis, easily separated, and having but little 
taste. Inside of root less farinaceous than outside, and containing 
less of the pungent, bitter astringent principle. Main root not as 
active as the small divisions. It consists of four distinct parts; the 
medulla or pith, the woody portion, the cortical layer, and the 
epidermis. The pith is a light spongy mass of cellular tissue, (in 
very old roots it becomes woody,) and is often nearly tasteless. 
100 grs. of pith gave of 
Water, 78-225 
Drv matter, 21-775 
Ash,- 1*747 
Organic inatter, ------ 20*028 
Ash calculated dry, ----- 8-028 
Organic matter calculated dry, - - - 91-976 
The woody part is fibrous and tough, and contains less of the 
active principles than the cortical layer. It contains in 100 parts 
Water, 72-779 
Di-v matter, 27-221 
Ash, -------- 1-139 
Organic matter, 26-082 
Ash calculated dry, 4*184 
Organic matter calculated dry, - - - 95*816 
The cortical layer is easily separated from the woody portion, 
adhering to it firmly only in the line of the rootlets, and is fleshy 
and tender, and contains more of the active principles than any 
other part of the plant. 
100 grs. of this layer with the epidermis attached, gave of 
Water, 70-809 
Dry matter, 29-191 
Ash, 1-.398 
Organic matter, 27-793 
Ash calculated di-j^, ----- 4-789 
Organic matter calculated dr}-, - . - 95-211 
