Amount of Tanning in Some Materials.

Scientific American 2, 7.1.1860

The following table we have taken from the Irish Agricultural Review, whose editor is an excellent chemist. The names, Mulligan and Dowling, are those of twho chemical students belonging to the Museum of Irish Industry in Dublin. Their analysis is quite recent, and will be very interesting and useful to our tanners: -
... Per cent. Authority.
Oak bark formation, 100 years old ... 8,45 G. Muller.
" young ... 18,87 G. Muller.
" British, 50 years old ... 8,90 Mulligan and Dowling.
" " age about 30[?] years ... 9,76 Mulligan and Dowling.
" " " 70 years ... 6,12 Mulligan and Dowling.
" Southamp'n, age, a'bt 50 y's ... 8,90 Mulligan and Dowling.
" cappice, picked sample ... 12,35 Mulligan and Dowling.
" Irish, pick'd sam'le, 45 yr's ... 9,59 Mulligan and Dowling.
Oak, old, white inner bark ... 21,00 Cadet de Cassincourt.
Oak, old, white innerbark ... 14,20 Sir H. Davy.
Oak, young ... 15,20 Sir H. Davy.
" colored or middle bark ... 4,00 Sir H. Davy.
" entire bark ... 6,09 Sir H. Davy and Geiger.
" spring out bark ... 22 Sir H. Davy.
Oak bark, Belgian popering ... 3,33[?] Mulligan and Dowling.
" " li've cop' pe' [---] ... 10,74 Mulligan and Dowling.
" " light " " 8,53 Mulligan and Dowling.
" Escburgh ... 19,35 G. Muller.
Munosa bark ... 17,97 Mulligan and Dowling.
Munosa bark ... 31,16 G. Muller.
Willow bark ... 3,96 Mulligan and Dowling.
" Leicester, white inner bark ... 16,00 Sir H. Davy.
" " col'd or middle b'ark ... 3,10 Sir H. Davy.
" " entire bark ... 6,80 Sir H. Davy.
" weeping ... 16,40 Cadet de Cassincourt.
Larch bark ... 3,51 Mulligan and Dowling.
Larch bark ... 1,48 Sir H. Davy.
Cork tree bark ... 12,16 Mulligan and Dowling.
Hemlock bark ... 13,92 Mulligan and Dowling.
Divi-Divi ... 20,80 Mulligan and Dowling.
Divi-Divi ... 49,95 G. Muller.
Valonia Smyrn[---] ... 34,78 Mulligan and Dowling.
Myrabolams ... 28,91 Mulligan and Dowling.
Shumac ... 19,35 G. Muller.
" Palermo ... 24,37 Mulligan and Dowling.
" Palermo ... 16,20 Sir H. Davy.
" Ma[---] ... 10,40 Frank.
" Carolina ... 5,00 Cadet de Cassincourt.
" Virginian ... 10,00 Cadet de Cassincourt.
[---], Bombay, light color ... 35,32 Mulligan and Dowling.
[---], Bombay, light color ... 55,00 Sir H. Davy.
" P[---], dark browncolor ... 46,88 Mulligan and Dowling.
" Bengal ... 44,00 Sir H. Davy.