Chemistry and Physics. 257 
a somewhat mils time with water, narcotine wins up into meco- 
nin and cotarni 
0, s8, NO 20 8 0,10) His N@,. 
(4.) Heated for a short time (about two bolls) iith an excess 
of hydrochloric acid, methyl chlorid is formed, and one atom of 
hydrogen replaces the methyl in the aie ; by a longer heat- 
cotine it tself 
(5.) The “ate of pepe has been shown to be ©,,H,,N®, 
and not ©,,H,,N0,; it is capable of sanehen with one-half 
and with a eat molecule ay sae er. 
(6.) Cotarnin, when heated with dilute nitric acid under certain, 
not yet clearly-defined conditions, is decomposed, yielding cotar- 
nic acid and methylamine: 
€,2H,,N0,+2H,8—€,,H,,0,+€H,N 
By the use a "Sonecateaanls nitric acid, as already potheed by for- 
mer observers, apophyllic acid is formed. The action of other 
be Ag agents gives results not yet studied. 
7.) Cotarnin heated with concentrated oF mp acid, yields 
methyl chlovid and the hydrochlorate of cotarna cid: 
€,,H,,N0,+H,6+2HCI=€H, CLL, H,.NO, HCL 
Hydriodic acid produces a similar — a one atom of €H, 
being eliminated from each —. 
C.. 10 Ps tHe =H, O+€,,H,,9,- 
(9.) Opianic Be by hoailic ith BPH Hchniessie and di- 
lute sulphuric acid is hee to Brees cid: 
© 0,+90=€,, 
(10. ) Opianic acid, on heating with peahe? a splits up into 
meconin and hemipinie acid: 
0.=€, H,¢9,+€,.H 
11.) Opianic aa. Decica a an excess hloric acid, 
exchanges its methyl for hydrogen. Beside methyl chlorid, two 
perpen are ae thus Prods janic acid an 
oe 
Only the latter ie “in obtained pare, the tinker spontaneously 
decomposing. Hydri riodie acid acts similarly. ke Ae ae 
