88 Prof. Schcenbein on the Insulation of Antozone. 
We hope soon to be in possession of a sufficient quantity of 
some salt of this metal to give a fuller account of its pro- 
perties. 
In reference to the letter of Mr. Crookes in the last Number 
of this Magazine, stating his inability to recognize the yellow 
line Lif, we may say that all the different specimens of lithium- 
salts we have experimented with have shown this line distinctly. 
Since the publication of his letter, we have examined some very 
pure specimens of lithium-salts, all of which gave the yellow 
line Li 8 with equal distinctness, though showing no other lines 
except Lia and. The red line may certainly be recognized 
with quantities of lithium-salt much smaller than are required 
to exhibit the yellow line. 
The apparatus we use is one similar to that described in 
Kirchhoff and Bunsen’s paper, and we find no particular pre- 
cautions necessary to exhibit the line in question, beyond using a 
comparatively large quantity of lithium-salt, say J) to 35 of a 
grain, and a thin ‘platinum wire of about + millim. diameter. 
We may here mention imeidentally, that we have found it 
advisable to discontinue the use of a brass Bunsen’s burner, to 
prevent the occasional appearance of a series of green and blue 
lines, due to copper. A Bunsen’s burner made of steatite is 
quite free from any such defect. The flame of the burner should 
also be regulated in such a manner as to have the part placed 
opposite the slit free from any marked blue tint, as otherwise a 
number of Ines, one green and three blue being the most con- 
spicuous, make their appearance. The blue or lower part of 
the flame of a candle or of an oil-lamp shows precisely the 
same lines. 
—— 
XIV. On the Insulation of Sea ee a Tete to Professor 
 Farapay. By Professor Scua@NnBEIN*. 
| HAVE been working very hard these many months to obtain 
the ‘‘antozone,”’ or @, in its insulated state, and I flatter myself 
that I have succeeded, at least to a certain extent. Youare aware 
that, from a number of facts, notably from the reciprocal deoxi- 
dizing influence exerted by many oxy-compounds upon each 
other, I drew the inference that there existed two series of oxides, 
one of which contains ©, the other @©,—the ozonides and ant- 
ozonides. The mutual deoxidation of those compounds I made 
dependent upon the depolarization or neutralization of @ and O 
into O. Now © and 0 being capable of being transformed into 
O, I thought it possible, even probable, that the contrary might 
be effected, 2. e. the chemical polarization of O into © and 0; 
and you know that in the course of the last and present year I 
* Communicated by Professor Faraday. 
