We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
28
CRABTREE, EATON, AND MUEHLER [j. s. M. P. E.
= 5.25 no silver was retained, which verifies the data illustrated in Figs. 4 and 5, and (c) there was very little variation in the quantity of silver retained after fixing for times longer than four times the time to clear.
The curves in Fig. 9 illustrate the results of similar experiments made with Eastman Motion Picture Release Positive Film, Type 1301. Three facts are evident from these curves, namely, (/) when the pH during exhaustion was allowed to increase to 4.9 only a very minute trace of silver remained in the sample fixed for ten times the apparent "time to clear," (2) when the pH was main
D 0.10
£ 0.09
5 008
^ O.OT
| 0.06
8 0.05
u 0.04
5 001
£ ooz
w ooi
FRESH
125 250 375 50O
DEGREE OF EXHAUSTION. FEET 55nrm. PER. GM.LOK1
FIG. 9. Silver retained after increasing times of fixation in exhausted baths. Kodak Fixing Bath F-5. Film washed 15 minutes. Eastman Positive Film, Type 1301.
tained below 4.9 the silver content increased with exhaustion but the absolute quantities were less than those retained by SuperJOT Negative Film, Type 1232 under the same conditions, and (3) with the pYL maintained below 4.9 the quantity of silver retained increased somewhat with the longer times of fixation for a given degree of exhaustion.
With the Release Positive Film, Type 1301, the quantity of residual silver increased somewhat after extended times of fixing (for example, from 2 to 10 times the apparent time to clear) but no such increase occurred with the Super-^Y^ Negative Film, for similar multiples of the apparent time to clear. The actual time in minutes in the