rd 
texture. When there is pasewha 
2106 PAPAVERACEE. 
-tion there are the distinctly granular, and the perfectly hom 
“not extend, are undoubtedly due to differences in soil, and. 
conditions of weather obtaining at the time of collecting the 
affect it materially. The presence of pasewha, again, affects 
The colour of opium is a valuable indigestion as to its purity: 
Teature.— Like consistence and colour the drug delivered. 
the Government Factories may be said. to differ, one sampl 
from another, in texture. At the two extreme poles of vari 
geneous, and the bulk of the produce lies, as to texture, som 
where intermediate between those extremes. 
The primary causes of variation, into which our enquiry doe 
drug; they are also due, to some extent, to manipulation of the. 
drug after collection, A light-coloured, chestnut or reddish- 
brown variety of the drug, which is free from pasewha, will, a8 
a rule, be found to be distinctly granular, while the dark, 
blackish-brown variety, which has more or less of pasewha 
its composition, or an excess of moisture, will on the oth 
hand tend to.the homogencons type. 
Ordinary manipulation, without the aid of sophistication, 
little effect on texture, but long-continued. manipulation 
in a very marked degree, and so dées an excess of moisture 
As already explained under the head " consistence,” to ht 
more or less, of the tears into each other whereby the evanulat 
nature of the drug passes by imperceptible gradations to the 
homogeneous. The presence of pasewha also alters the th _ 
waxy skwereel=.: bi the — to one that i is more or less smi 
an extenb varying ¢ 
ing | to consistence, wate. & uniform and minutely grand My 
“presént. this ductility 
is — artes acc 
; increased, while the granular texture j 
