The Sun.
London, England, 1864-06-21 00:00:00

Progress of Photography,

Mr. Swan has just published a process by which
he can detach a negative on collodion from the
glass plate on which it has been obtained. For this
purpose, after finishing and drying the negative in
the usual way, he exposes it to a temperature of
from 30 to 35 degrees centigrade, lays it down face
upwards in a perfectly horizontal position, and then
pours the following solution upon it :—Gelatine,
30 grammes; water, 120 do.; glycerine, 2 do. This
solution must be of the same temperature as the
plate, and a quantity of about 30 grammes is suffi-
cient for a . common sized plate of 17 centi-
metres by 21. If it does not spread readily,
we may help it a little by met.us of a glass
rod, taking care, however, to avoid air.bubbles,
This done, the plate must be covered with a
glass receiver to protect it from dust; the gelatine
will cry in the course of 24 hours, when Sehnoe
varnish may be spread over it. When this is dry,
an incision is made on the coating all round the
border of the plate with a penknife, a corner of the
coating is raised up with thepoint of the blade, and
by pulling carefully the whole will peel off from the
glass, provided the collodion be sufficiently strong,
and the gelatine have been previously clarified
with albumen and strained through flannel. By
this means the impression which was on the glass
now lies on a thin sheet of gelatine, which will
serve the same purpose as the glass for print-..
ing, by laying the gelatine side on the
albumenised paper in the positive printing frame.
If many copies are to be pulled, the collodion side
ought to be varnished also. This method of trans-
porting negatives from glass to gelatine will be
found extremely useful in all cases in which economy
of space is an object; for the gelatine sheets above
described may be kept in portfolios, and are not
liable to break during a journey. An American
pnotographer has also publishes a _c
similar nature to that above described ; he covers
a glass plate with a coating of wax dissolved in
sulphuric acid ; on this he pours pure collodion,
which he causes to spread as usual ; he takes the
7mpression, and then applies the gelatine as before.

Sandhurst Royal Military College.

- -
The following are the names of successful gentle.
men cadets in the competitive examination for com.
missions without purchase, June, 1864 :-
1. GENTLEMEN CADETS OF THE THIRD TERM.
Order of Index
Merit. Names and Rank at College, No. Marks
1 Law, W. A., under officer
2 Morris, A. W., gentleman cadet
3 Reid, S,, corporal
4 Badeley, H., responsible under officer 6 6,893
6 Itennick, A, de C., gentleman cadet..
6 Acklom, S., responsible under officer
7 *Williams, H. M., under officer ll 6,156
8 Moore, W. 1., gentleman cadet
2. GENTLEMEN CADETS OF THE SECOND TERM.
'1 Hornsby, A. W. H., gentleman cadet 127 9,177
2 Brain, D. L., gentleman cadet
3 Moffat, H. 8., corporal
4 Jones, W. H. D., gentleman cadet l3O 7,968
6 Brander, E. R. S., gentleman cadet ..112 7,961
6 Lang, I. W., corporal
7 Cotton, R. G. T., gentleman cadet
8 Matthews, C. J., gentleman cadet 137 7,846
9 Lyons, R. C. J., gentleman cadet
10 Daniel, W. H., under officer B4 7,587
11 Lynch, E. 1., gentleman cadet
12 Tickell, A. L., corporal 144 7,434
13 Stoney, G. 0., corporal lO4 7,417
14 Maclear, H. IV., corporal .... lOO 7,271
15 Godbold, G. A. 8., gentleman cadet 47 7,236
16 Leckie, F. W. V., corporal ......
t Rutniall, C. D., gentleman cadet
17 Whisb, C. F. D., gentleman cadet 109 6,779
18 Skinner, I. T., gentleman et.ldet 141 6,753
19 Lingwood, A. T., gentleman cadet 132 6,722
20 Sheffield, C. H. gentleman cadet
21 Paterson, G. 1., gentleman cadet „ -138 6,601
22 Creagh, W., gentleman cadet 81 6,587
23 Darky, A. J., gentleman cadet 119 6,559
24 Christie, W. H., corporal
25 O'Callaghan, 1. W., gentleman cadet lOl 6,471
26 Elmhirst, B. P., gentleman cadet 122 6,343
'27 Heath, L. F., gentleman cadet
140 6,225
28 Sawyer, G. NV., under officer
29 Dashwood, F. A., corporal... 7l 6,145
30 Boileau, 11,, gentleman cadet 111 6,140
31 Rookc, A. W., under officer l2B 6,102
32 Everett, W., under officer
33 Man, H. C. H., corporal ................ 93 5,881
* Owing to an accidental error, the name of this gentle-
man cadet was not included in the list of the 40 cadets first
recommended to the Commander-in. Chief.
Indian cadet.
-- ,

THE REPRESENTATION OF WINCHESTER.--Wa
were authorised last ateek to announce the candidature of
Mr Barrow Simonds the forthcoming election. It is said
that Mr kiimonds comes forward on the Conservative inte-
rest, asking for the support of that portion of the consti-
tuency as the future colleague of Mr Fleming. If that
programme be the true one, and if it be honestly acted upon,
we may venture to predict the return of Mr Fleming and
Mr Simonds : for the Conservative interest, if united, can
undoubtedly return two representative for Winchester in
the next parliament.—Hanipshire Advertiser.
ANOTHER FEDERAL OUTD.AGE.—W e give in an.
other column the narrative of tile arres and impri-
sonment of Mr Samuel G. Levey of this city,t while on his
return from Europe, by the Federal authorities at Boston,
as furnished by that active Federal apostle and s}mpathiser
the Montreal Herald. Our contemporary' s indignant
comments on this one of a hundred similar cases for which
it had not a word of remonstrance is not a little singular,
and suggests the inquiry whether the indignation in this
instance does not proceed less from the public sN tong done
than private interest in the individual sufferer. Mr Levey
has suffered from the vile spy system instituted and pre-
sided over here by "that late eminent and respectable
statesman" Air Giddings. lie had not even been guilty of
the crime of giving aid and comfort, to the memies of the
UnitedS 30' sympathising with the South. It is true
he is Britisl abject, resident in a British province, but
hissymP"i es have always been with the North; but,
neverthPle era, the chief of the Federal spies sent forth au
edict his punishment, and he has been punished, and
will get no redress. Montreal, and every city and con-
sidehsble town in Canada, swarms with Federal spies, who
remark those supposed to be inimical to the Fede-
ment, or against whom they have any for similar
treatment.—Montreal Evening Telegraph and Daily C
mercial Advertiser.