HF The History of Photography 600pág

3 30 The collodion period
R. KENNETT'S
PATENT
I SENSITlSRUT::!sr!Ro u.ELLIGLE.
I
I
F a portioa oaJy, ol the contenll of the Bos ia required to be dissolY'Cd,,
weigh out forty grai.u to each ounce ol water, and proceed as follows:-
Pl the Pelliclc into a bottle somewhat larger than the qtaantiy of
Emu1sioa required, then add the Waser (distilled by preference), let stand
(or ahoot twenty m.iDGtes to softeu, tbon place tbe bottle iD bot water for
!c";.d't:,tf:.'::: ;l·i:rr:ai !,e l ::n is t:mJ;,!: !:l°':
6rst into it, thi1 at once gets rid of alf bubbles occasiooed by the ahaking
tii!:8tui:;; : U:':k! m ;:: :, °:d :r! 1i i:b:
l'tu:umatic bolder, poar on the a:ntre sufficient to CoYer the ume, and I
wi lh a thin glus rod gal.de the Emaltion over the surface , tilt the plate
to .g ... -i an even 6 1 m. aad pour from off one comer any mrplo1 quanti?.
into the bollle, and place the plate Rat on a levelled table or &heir until
dry, whic i! will do, a a tempetaturc of from 6o to 70 Fabrenbit, iA about
three hOilliVa.
THE
EXPOSURE.
Give the Ame time a.s for wet plates;
THE
DEVELOPER.
No. 1. To 4gniatof Pyrogallic Acid, add 1 oz_ of'Water.
No. a.
N