the cbair, sp(ke of the great interest he felt in the sectior, 
and hi8 regret at not bavirg bten able to devote moje time 
to it, as well as of the good feeling which existed among all 
the members. Mr, Worsley, in assuming office, said that, 
coming as he did after a man of such genius as Dr. Herapath, 
be -would have to claim the indulgence of the member?, 
though he could yield to no one in an earnest desire 
to promote the objects for which this section of the 
Naturalists' Society bad been established, and that, 
although a purtly scientific subject was not always 
attractive, a photographic one ought to be, and it would be 
his endeavour to render the meetings as generally interesting 
as. possible. 
Mr. WoKSLEY then read some notes of observations made 
by himself and Mr. Gillford on the comparative solubilities 
,of chloride, bromide, and iodide of silver in hyposulphite of 
soda. 100 parts of this dry salt would dissolve 90 per cent, 
of chloride of silver, and nearly as much bromide, but only 
about 6 per cent, ot iodid*', or, if the solution were heated 
and allowed to cool, about tix per cent., the quantity being 
also influenced by the amount of alkaline iodide present. 
The solution of chloride t-r bromide in the hypo contained 
a double hyposulphite of silver and soda, characterised by a 
sweet taste, and by being only decomposed with difficulty by 
boiling, while wii h the fcolution of iodide there was no sweet 
taste, and if an attempt were made to crystallise the solution, 
pure iodide i f silver separated out, showing that it had doc 
bten decomposed. Further, there was a great difference in 
the action of an excess of the halogen salt on the solution. 
If chloride of potassium were added to a solution of chloride 
of silver in hyposulphite of soda, no effect was produced ; 
but if iodide of potassium were added to iodide of silver 
similarly dissolved, a precipitate of iodide of silver was 
formed, which could only be re-dissolved with very great 
difficulty by a large excess of hyposulphite of soda. This 
was very anomalous, and Mr. Worsley could offer no ex- 
planation of the fact, nor did any suggestion occur to any 
member present to account for it. 
Zoological Section, Jan. 12th. — Dr. Henry Fripp, 
president, in the cbair. The audited cash account for the 
past year was lead, showing a small balance in hand. Re- 
ferring to the six meetings which bad been held, the pre- 
sident remarked upon the necessity for more active 
co-operation on the parts of the members of the section, if 
it were to be carried on satisfactorily, and hoped that Haore 
zeal would be shown in future. The election of officers of 
the section then took place, Dr. Fripp bein^ chosen pre- 
sident, and Mr. S. H. Swayne hon. secretary for the ensuing 
year. Mr. C. O. Groome Napier exhibited a specimen of 
loligo media, found in 1865 at Clevedon, and remarked that 
these species of loligo secrete a brown fluid lighter in 
colour than true sepia. He also showed a male tkylark, 
alanda arvensis, of abnormal colour, a kind of fawn colour, 
resembling a cream-coloured lark of South Europe in 
plamage, bat not in the form of the bill. 
1 
T. H. YABBICOM, 
a HARDING, JuNR.,(_ « , e . • 
A NOBLE ' Sectional Secretaries. 
S.* H. SWAYNE. 
WM. LANT CARPENTER, 
Hon, Reporting Secretary, 
