256 - Scientific Intelligence. 
few eons of the acidulated Agee cm iodid solution, would be- 
come at once blue. But no blueing took place, even when the air 
was paced through the water for 15 or 20 minutes. The blueing 
e former case must be due, therefore, ry to ozone. Than 
of this ozon 
that it should be placed in the lower half of the flame where the 
flame comes in contact with the cold air. Ina candle-flame, or that 
of an alcohol-lamp, most ozone is found near the lower blue portion. 
The current of air must be rapid enough to eahect the flame, yet 
not so rapid as to draw in any unburned gas. By the ozone chu 
obtained, the solution of potassium iodid and starch was blued in 
a few seconds, a mixture of manganous sulphate solution with a 
few drops of potassium ere e became dark brown from the 
formation of the peroxyd, when inhaled, the mucous mem- 
brane was irritated and a jransint catarrh produc ced. No ozone 
could be detected in the air surrounding ignited charcoal; and all 
theil einer nicht leachtenden Gasflamme, durch ein schief aufwiarts 
gerichtete zwei Linien weite Glasréhre, einen sehr kriftigen Luft- 
strom mittelst eines Blasebalges durehtrei t, so kann man in der 
urchgeblasenen nicht unbedeutende Mengen von Ozon theils 
durch den Geruch, theils durch Jodkalium-Stirkepapier nachwei- 
ew 
a—J. Pr. Ch., U, i, 415, Sal 18 7 
sad On the Constitution of anaes and its RAT aa ial 
ducts. —MATTHIESSEN ears: sums up the results of his extended re- 
search upon Narcotine 
(1.) The analysis a various specimens of narcotine, tuo 
m various sources, has shown that it always has the same ¢ 
position, ©,,H,, 
(2.) As s already noticed by previous observers, narcotine, my 
the action of oxydizing agents, splits up into opianic acid and ¢ 
tarnin 
€, @,+0=6©, His Ss4+0r9 
(3.) Heated _ to a temperature — ablated 200°, or for 
