Miscellaneous Bibliography. 421 
cution with a comparatively small outlay for materials. They are in- 
tended to be repeated by the students stich under proper direction, 
and this mode of instruction which engages and disc sciplines the percep- 
tive faculties and unfolds the methods of investigation is one which is 
more and more coming to be regarded as essential to,a successful system 
state of the science. It is afer free from the oes de the blunders, 
and the contradictions which are so prominent in the meee of our 
elementary text-books J 
Traité des Matisres Colorantes, comprenant leurs ied) a le 
Teinture et & UV Impression, et des notices sur les fibres Textiles, les Epais- 
many books have been published on dyeing and printing, there has long 
been a want of some sound, comprehensive work representing the present 
state of knowledge ionroeu tous these arts. The great work of Persoz, 
coal mines of England will supply all the world with all needed dyes. 
Indigo, recep tc and m ave lost little of their importance, the 
colors derived from lichens are ail in use, and even carthamus has so 
thing more than a historic va 
hat i is lacking i in the siaee works on ee ue is, M a great measure, 
fi he author says of the part 
Ha] 
hd 
oa 
of 
om 
® 
oF 
hex | 
a 
A 
Se 
wn 
® 
jo] 
=) 
“2 
z 
o 
i 
= 
a 
° 
priétés einen de leur prepasaiion; et des m “aa d 
leur pureté et leur richesse.” He writes not as a compiler onlagalide 
out of an indigested mass of siivinn from other books, but as one who 
is himself an investigator, as one who has something fresh to a pate 
Ienowe h how to say it in proper compass. In fact he comes up to 
expectations of one living at a Af industrial center and Pacey the 
Am. Jour. Sct.—Srconp Serres, Vou. XLIII, No. 129.—May, 1867. 
. 54 
ae 
