182 Journ. of the Asiat. Soc. of Bengal. [July & Aug., 1915. 
The total loss of weight was only 1,2 mgms. The bulk of 
this was lost between 150-210°, and probably was due to the 
decomposition of the small amount of oxygen compound present. 
An intimate mixture of the dry darkened product was made 
with pure KCl, and the mass fused and extracted with pure 
water in Pt vessels. 
A slight alkaline reaction was in all cases obtained with 
phenolphthalein and the filtrate. 
It was next attempted to prepare photochloride containing 
a larger amount of the reduced product. A material of this 
kind was made by the repeated action of dil. HCI solution a 
dil. AgNO, sol. in sunlight. An amorphous chocolate brow 
powder was obtained, an analysis of which is appended. 
0 gms. yielded 2 cc. of oxygen 
3,4230 gms. were dried at 100° for 8 hrs. losing only 7ll 
mgms. in weight. 
This on treatment with NH,HO gave 0,3908 gms. of Ag 
so that nearly 4+ of the AgClwas reduced. The am moniacal 
filtrate containing dissolved AgCl was acidified with HNO; and 
the ppted AgCl weighed. This amounted to 3,0316 gms. or 
total of Ag and Ag(l 3,4224, a defect of only 3 mgm. from the 
the volume of contained oxy ) 
that obtained in the dry way. Unfortunately it was found 
that the product obtained in this way gave indications of the 
presence of HCl, i.e. an acid reaction with water even 
repeated washing. Ag(Cl formed in the presence of HCl seems to 
retain small quantities of the acid from which it is absolutely 
impossible to be freed. This is an exactly similar phenomend? 
to the formation of lakes by Al(OH), and the absorption of 
small quantities of metallic chlorides like FeCl,,-Hg,Cl. by pe , 
