Proc. R.D.S., N.S., Vol. IX. Plate XXIII 
680 
Lah A 
640 lf | 4 7 | ~ ‘l 
| 7 { gilic® 
600 a | Sp ra IEG] 
| | | A | | 
560 a | IE I Le 
[le Bie 
{ eet | ar F- 
520 ah lama Tr ZA iB cal ! 
7 + 7 | ut 
ql aah a rap $1 | 
480 2 2 4 |} iy “E Sh 
: yY a 0 ~ 
[Z| (6 Ss 
440 , 36) @) lio a nia — 
ger ous et 1 
\G BAT ot we YB 
400 Sy A hier a 
3 Abas || 4c f = 
360 = Zo a Le y a fa | 
2 | i - | 
320 
Lal 
a 
L +I 
Construction showing - 
240 
200 
eo i is hii the Minimum LATENT HEAT of 
" HEEEEEE Eee QUARTZ 
a es | ld | 
: | E 
~80 Slee |. 
| 
She 
= = | }—| | 
© too" 200" 300" 400° 500" Temperature (cent) 1c 1500° 2000° 
