Chemistry and Physics. A407 
avoid the uncertainty presented ws the rp ois or of these four 
Bierwites, in which the ratios are the same, M. Gerhardt observes that 
it will be preferable to consider these so-called re 8 salts as so many 
distinct types sag yee 78. neutral salts. 
The formulas of t rates are arranged upon the same principle 
as those of the sill ie admits three principal types. 
Ist. [2B, O,4-OR, ]=—B,0,(R,). 
2d. [4B, O,+-OR, ]=—BO,(R). 
3d. [$B, O,--20R, ]—BO,(R,). 
ney the first he attaches a basic sub- -type, B,0,(R,)-+-O(R,), which 
accordance with M. Gerhardt’s plan mi ght be equally m made a dis- 
et type, B,O,(R,), which appears to be identical i second 
UNT 
es pe by M. Geraarpr, (Ann de Pharm. et ‘de 
Chimie, June, (Gas —The researches of the author Mei the so-called 
80, H,+14Aq, it is completely dissolved without any disengagement 
of gas, and the syrupy liqui se on st oe colorless crystals of 
bisulphate of ammonia, which may be obta pure by washing with 
alcohol. ‘The mother liquid dabareted with final, gives with nitrate 
of A i a Be of the yellow phosphate. 
+2(S 0, H,+14H, O}—2{80, H,NH, ol TPO H,. 
The biphosphamid PNOc orresponds to the protoxy of nitrogen, 
N,0.+ M. Gerhardt has shown that this last is really an amid of ni- 
tric acid, and yields ammonia and a nitrate when it is passed over a 
mixture of lime and potash at a sufficiently high temperature. As 
Phosphorus and ee are sree of ieee each other, we have 
then PNO, Bi 
NNO, : ‘ . Nitrous oxyd. 
PU, c. ; : Metaphosphoric acid. 
0, H, : ‘ Nitric acid. 
[This pe ty of the real nature of nitrous oxyd is one of great 
interest, and tends to enlarge our ideas as to the possible constitution of 
any chemical compounds. The formation of this substance and its 
action with heated alkalies, show that it is not a simple o rd, a nd lea 
Us to the se seemingly strange conclusion that the nitrogen in it, really ex- 
ee this Journal, Jan., 1847, p. 105. 
{ ih will be recollected that M. Gerhardt divides the equivalents of nitrogen and 
Phosphorus received by the English chemists by 2; those of tg ogen and the 
metals, and consequently the formulz of salts generally, are in like manner haly- 
ed. The for mula of nitrous oxyd accordin ng to the common notation, must now 
be Ny. yy OF NNO,. For some sanaemesineed wee on e equivalents of hydro- 
gen and the metals, see this Jour. for Sept., 1847, p. 1 
* 
