POWDERED DRUGS. 
307 
163. Goa Powder. — Small, wine -colored, somewhat 
translucent, irregular angular fragments; bright red- 
dish with potassium hydrate; few ducts and libriform 
cells with bordered pores. 
164. Lactucariura. — Grayish brown and dark brown, 
irregular and rather angular masses; with alkalies 
they become reddish brown and then a dirty brown ; 
with sulphuric acid it is but slightly affected. 
/S BECOME MORE OR LESS TRANSPARENT IN 
GLYCERIN. 
165. Aloes (Curacao). — In a glycerin mount the 
particles become clear and behave like Cape aloes, but 
generally, numerous acicular or large prismatic crys- 
tals remain, or separate in the clear yellow space where 
the fragment of aloes was originally. 
166. Aloes (Socotrine). — In a glycerin mount the 
fragments are not very perceptibly affected. At the 
most there is but a faint yellowish color around the 
grayish or grayish-brown masses. In old Socotrine 
aloes the gray masses look like rosette crystals. 
167. Catechu. — Large opaque, dark brownish- red 
masses which gradually become transparent on the 
edge and dissolve with a sherry-wine color; fragments 
of sclerenchyma are also present. 
168. Kino. — Blackish-brown fragments become clearer 
and of a deeper red (port-wine) color as compared to 
catechu. 
POWDERS OF A REDDISH COLOR. 
This group includes those powdered drugs which 
are of a pinkish, reddish, brownish-red (brown mad- 
der) and rose color. 
I. CONTAINING STARCH. 
169. Quillaja. — Pinkish; very sternutatory; calcium 
oxalate in monoclinic pyramids from 35 to 200 /* long ; 
