REPORT ON CHEMISTRY. 
517 
The following substances may also be classed together. 
Names. 
Discovered by 
Remarks. 
Lignin. 
Hordein . 
Fangin .. 
Tremellin . 
Pectin . 
Pollenin .. 
Proust. 
Braconnot. 
Brandes. 
Braconnot. 
Braconnot and John. 
PProbably a mixture of the powder 
< of the pericarp with the insoluble 
b integuments of the flower. 
j The fleshy part of the Mushroom 
\ tribe. 
f Has the same relation to Tremella 
\ mesenteria. 
The gelatinizing principle in fruits. 
f The vegetable mat-"] Ced. Lycop. 
j ter of the pollen | C. 40*0 ...52-2 
<( of the cedar and ^>0. 48-3 ...39*2 
| lycopodium gave H. 11*7... 8*6 
b toMacaircPrinsep_ 
Products of destructive distillation, Qc. 
Names. 
Discovered by 
Remarks. 
Naphthaline ... 
Petroline .. 
Paraffin . 
Eupion . 
Dr. Kidd. 
Christison. 
Reichenbach. 
Reichenbach. 
f 5 C +4 H 3 C + 2H 
93-75-j-6*25,Faraday: 94*68-j-5 , 31, 
b Opperman. 
j From petroleum, probably a variety 
( of paraffin. 
J C = 85-22 + II = 14-98 = C + H, 
\ Jules Gay-Lussac. 
("This and Paraffin are both products 
<( of the destructive distillation of 
b vegetable and animal substances. 
Besides these, there is the vast variety of vegetable oils: those 
of sugar, starch, tannin, and bitter principle, &c., many of which 
are characterized by properties so little distinct, and their true 
differences in composition are so little understood, that it is un¬ 
necessary here to set them down as so many recognised vege¬ 
table principles. 
The stearoptes, distinguished by particular names and placed 
in the above list, are probably only metamorphic states of the 
oils in which they are deposited, as is the case with that de¬ 
posited in the oil of bitter almonds (Amygdalin), as shown by 
the analyses of Wohler and Liebig. 
Etherine .—Berzelius proposes for the radical or base of the 
aethers, the term Etherine = E, and represents them as fol¬ 
lows : 
