11 f> 
55 to 6o° C. on the water-bath. After cooling, the calculated amount 
of ammonia was added and the product—a greyish powder—collected 
and re-dissolved in boiling alcohol. The alcoholic solution was then 
boiled with animal charcoal for ten to fifteen minutes, filtered and 
evaporated to about one-third of its volume, when on standing small 
needles crystallised out. I hese needles melted at 21 f to 219 0 , but 
at a temperature of 167° to 169° a slight decomposition was noticed. 
The product was dried for two hours at ii 6°, when a loss of water of 
crystallisation corresponding to i\ molecules was observed. 
The following analyses were carried out: — 
T. 0-2151 g r . gave 0*3744 gr. CO a and 0-1065 gr. H, 0 . 
II. 0 2001 gr. gave 0-3474 gr. C 0 2 and 0-0979 gr. H 3 0 . 
III. 0-2337 gr. gave 0-4057 gr. CO a and o-iio 9 gr. H a 0 . 
IV. 0-2211 gr. gave 18 8 c.c. N 2 (moist) at 27°C. and 741 mm. 
0 2 473 gr. gave 20 6 c.c. N a (moist) at 27 0 C. and 741 mm. 
Found C = 47-47%, 47.35%, 47-35%. 
I-I = 5-50%, 5-44%, 527%. 
N = 924%, 9-00%. 
4o« 47 U 31 JN 4 f/ 3 -Guarinine) requires.- C = 47-00%, H = 4*90%, 
N = 9-14%. 
(Theine) requires : C = 49-48%, H = 5-16%, N = 28-86 l 
7 8 xt 4 (theobromine) requires: C = 4666 %, H = 4*44% 
N = 31'11 %. 
dJZ’ aCetiC anhydride - / 3 -guarinine forms an ac 
alcoholTn P ? bably tHe m ° noac etyl (?)—which crystallises f 
alcohol ,n small needles and melts at ,92° to 196°. 
spondin g n .C^ o H ed O V Ncnf /9 ' gUarimne forms the c0 
free base C h'q^N >S CaSlIy transformed int0 
Ag, O. Tlip kn* J> ‘ 1 . on trea tment with freshly prepc 
melt at 167° to llSCS from ch loroform in long needles, wl 
Like other alkaloids a n 
chloroform a h™™- y £ uannin e forms, when brominated 
crysta„ i ™' f ^~ a ^ve. probab,, C 4 „H..B r 0 2I N„ 1 
e- , nd alcohol, and melts at 236° to 237 0 . 
r r°m the above nnalytiro/ R , •• 
nifr ogen-fi gures that R ■ “ U M obvious > especially from 
P-guartmne is neither theme nor theobronn 
