334 _ MR. E. H. GRIFFITHS ON THE LATENT 
TABLE XXIII.—Experiment No. IV., September 17. 
Number of Clark cells 3 (each consisting of 4 in 11!). Temperature cells, 15°14 C. ; 
temperature bridge-wire, 63°°5 Fahr. 














Reva na ana Time | Revolutions Ti External temperature 
riage-wire reading. (chronograph). | a 000’s). ime. by thermometer TI. 
| 
49 81:7 882-35 
49°5 WBS | 0 100-1 
50 1446 | | \ 
50° VD | | 
51 207°5 | 882°39 
144-9 | 882°37 
59 730°5) | 3 6690 882-40 
59-5 | gen | 
60 | S| 
60°5 | 831-4 
61 865°6 4 858-5 €82:40 
yo | | 882-40 
| 
69 14210 | | 88240 
69°5 14566 =| 7 | 1426°6 
70 1493-3 | | 
70°5 1529-0 | | 
71 1565°7 882-40 
| 1493:1 | Time per 1000 18950 | 88240 
| | om = 5277 
| | | 






The operations necessary for the reduction of Experiment IV.* are as follows :— 
Data required. 
Mean value of 1 centim. of range in terms of mean bridge-wire centim. (given by 
calibration of bridge-wire; see p. 285)— 
DOO 6 5 6 6 oF oo  LOOHOBL 
GOSGOUTO Ae shia lca poe Whe) SIL 
Correction for temperature bridge-wire to 15° C. = range {1 + °00016 (F.° — 59)? 
* Fuller particulars concerning this method of reduction will be found in Paper A. 
