on Photogenic or Hydrocarbon-Oils from Coal. 117 
several smaller “ notes.” A tolerably complete list of which may be found in 
Erdmann’s en fiir — Chemie, 1,1. It is very much to be regretted 
that these 
s hav r been odin scted and ublished as a separate 
volume. Sen w, any : checnink who could find time to collect these scattered 
articles = eal ns into igi or French, would unquestionably pro- 
mote a9 e of science by so 
ing. 
sone t the as iets for. a ened, solely in its scientific bearings, w 
pe oe St from an expression sa astonishment, that the details of Renchen: 
bach’s researches are so little kno 0 the generality of chemists ;* while, on 
the other hand, we are forced to it So that it is indeed rare that eieeutic 
“ea conducted by a chem ist in his laboratory, have s so fully i i i a 
tu te t 
para. kno eiche 
ous publication, Christison cre * Petroline, but subs eens as tte od its 
identity with parafiine. In 1833, Bleyt distilled oils Fox lignit 
A little later, in 1834, Gregory§ published an able article _—  parain pont 
eupion, and their occurrence in petroleum. Of this eect 
troleu 
For the labors of Hess in Russia, and of several oh he in Ger- 
many, as well as for the interesting discussions which followed between these 
i eines le 
* This lack of information nee to ri upon the circumstance, that the 
th of most recent chemical text-books seem to have derived their knowledge of 
€ subject. in ame fro 0 Ge Lussac’s brief abstract of Re — ntcovers ae 
ba sd = as published i in 1832, in Poggen ndorff’s Annalen, xx i _ “a 
unatles xt 
the journals of 4, ‘sented et de Physique, [2], 1, 69; and quite extensively copie y 
this saeteoten we would respectfully urge upon all those who have fallen vie 
ae al of regarding as somewhat apochryphal the numerous substance 
¢ — scientific interest, which Reichenbach separated from ae products 
4 ss distillation that before seeking to discredit—or allowing themselves to dis- 
believe—them, they should conduct experiments similar to his, on a scale of egr 
“ i tide, et us here also bear in mind the luminous conclusion of the late Dr 
ore of Edinburg’ . story goes, (Vid, emical News, i, 56), 
pada informed his class that Reichenbach had discovered in tar, “ creosote, pica- 
sd he, cedriret, capnomor, and a host of other substances of no interest or 
ii ce whatever.” Of these “unimportant” substances, two at least, eupion and 
affine, are to-day as well known, in the world, as bees-wax or Cauan although 
i ientific 
kn Paratively little—we had almost said nothing—-has been 
an led them, since the publication of Reic h’s memoirs. If, : 
eds Other of these well. nigh forgotten bodies should be fe po 
pal ortance, we would quickly enough find some one claiming credit for its “ dis- 
vy? and oppre nomenclature, by add t another name to 
existing “ host,” n now we await, with no little interest, the elucidation of the 
dvestion—whether the new violet dye, prepared by oxydizing anilin, which is ex- 
ides much interest, un names anilein, Perkin’ — uve, etc., is n 
tical aed or a component of, the yous of Reichen 
Pat ransac of Retin Society of Edinburgh, xiii, 118 ; also in Repertory of 
ext Invention 1 835, [N. S.] vol. iii, p. 390. : 
Jahrbue A peg Seidel’s Journal fiir Chemie u. Physik, B. \xix, [B. ix, of the Veues- 
ansactions burgh, xiii, 124; also in Repertory o 
PR, of Royal Societ of Edinburg epertory of 
13 Zenon ta vans, LN. S.] vol. i, p. 108, 
