30 I. VEGETABLES.— CoRYLiDEJE. 



*Black poplar, Populus nigra. Buds resinous. 



*AbelE5 White poplar, Populus alba; — * Aspen, Trembling 

 poplar, P. tremula. Barks useful in strangury. 



laOUBAUDY YovLAR, Populus pgramidalis. With nitromuriate 

 of tin, dyes a fine yellow. 



*Italian Poflae, Populus fastigiata. Bark dyes mordore 

 colour. 

 PoruLUS TREMULOiDEs. Bark tonic and stomachic. 



41. BETULIDE^. 



*BiRCH, Betula, B. alba. Leaves used in itch and dropsy. 

 * Alder, Alnus, A. glutinosa, Betula alnus. Bark and leaves 

 very astringent, vulnerary. 



42. CORYLIDE.E. 



*Hazel, Nut tree, Avellana, Corylus avellana. Nuts im- 

 ported from Barcelona ; kernel of the nut oily, pectoral, used in 

 emulsions, yields oil. 



*Oak tree, Quercus, Q. llobur. Bark, quercus cortex, chiefly 

 used for tanning leather; astringent, febrifuge, gr. xv to 3ss, 

 every two hours, also externally in fomentation ; a decoction of 

 the bark, with some alum, very useful in relaxations of the uvula: 

 seeds, oke-corn, acorns, glandes quercince, and their calyces, cups, 

 cupulce, as also the wood, leaves, and the excrescences pro- 

 duced by the bite of insects, oak-apples, are equally astringent, 

 and of great use in tanning and dyeing. — Tanners bark. The 

 exhausted bark left after tanning leather, used by gardeners 

 to produce a slight equable heat by its fermentation. — Tan 

 balls. The muddy sediment of tanpits, used for summer fuel. 

 Officinal preparations. — Decoctum quercus, D. L. Extractum 

 quercus, D. 



White oak, Quercus alba. Bark emetic. 



Quercus castanea; — Q. Castillana; — Q. esculus. Acorns 

 eatable. 



Black oak. Quercitron, Quercus nigra, Q. tinctoria. Bark 

 used in dyeing yellow ; imported from America. 



Holm Oak, Quercus cegylops. Cups, valonia, very large, used 

 in dyeing instead of nut-galls, imported from Greece. 



Quercus infectoria. Excrescences, nut-galls, gallce, galla, 

 very astringent, tonic, antiseptic ; those from which the insect 

 has not escaped, blue galls, are the most esteemed: imported 

 from Aleppo. 



