Rays emitted by Glowing Platinum. 463 
4 FY 
17 2445 0:0037 0°0005 0:0009 0:0009 0:0007 0:0007 0-0005 0-0004 
18 2648 00029 0-0006 00-0005 00004 0°00025 000022 0-0020 09-0001 
19 2853 O-0017 * 00004 42 ous ane el ee 
Taste IX: (Isothermic). 
Regions. tensity. 
1900° 950° 1825° 1800° 1775° 1750° 1725° 
8 or 609:1™™ 17071 : ee : 234 1:078 0°9470 0830 0°732 0°637 
9 i 2 1026 0°874 0748 0°6322 0°52 0480 0416 
10 1017 10000 0-852 0°721 0°606 0°5147 0-436 0°379 0°322 
ee 1291 03665 0 0°257 0150 07123 0°096 
12° 1493 01975 0-163 0149 O°115 070946 0°076 0°064 0°055 
13. 1629 01086 0°089 0°076 0°063 070512 0°042 0°034 0°027 
14-1833 00758 0058 0°052 0°046 0351 0°030 0°025 019 
15 2037 00445 6°036 0°033 0°027 070216 0-018 0016 0013 
1¢ 9941 00391 0:027 0°024 0°020 0°0176 0°013 0-010 0:008 
17 244 00282 0°019 0°015 0.013 0°0123 0:006 0°005 0-004 
18 2648 00256 0-014 0-011 0009 0°0108 0003 00 002 
19 2853 00160 0°008 0°005 0°004 0:0071 0°0015 0-0012 0-0007 
1700° 1675° P 600° 1575 1550° 595° 
8 or 609'1™™ 0:5512 0°472 0°395 0°326 02719 0214 0169 0-131 
9 8 0°3667 304 0°256 0°210 0°1694 0128 0-100 0076 
10 «1017 02774 0-228 0°187 0°155 0°1221 0:092 0-068 0°052 
1991 0-0668 0°052 0°042 0°033 0°0277 023 «0020 «=0°016 
147° 450° Fe 1325° 
| 8 or 609°1™™ 90-0922 0°067 0°056 0-047 0°0388 0°032 “027  0°022 
9 813 00576 0°046 0-037 0-028 0°0227 0°0170 0-01 9 00113 
Oe = 1017 00382 0 26 0020 0°0176 0°0121 0°01 008 
i 1221 0120 00113 0-011 0-009 0°0043 0-004 0°004 0-003 
12-1492 0°0046 0-003 0°0025 0-002 0°0018 0°0015 0 0012 0:0003 
13 1629 00019 0°00 0008 0-000 ):00035 0700021 
14-1833 00009 0:0007 0-0005 002 0-00019 0-00017 ) 0015 0700010 
15 203% 00005 0:0004 0:0003 0-00015 0-00007 0:00006 0°0005— ---- 
i sen Gone oe ee ee Se ee 
53 e ; 
19:98 wees ei ks ae 
| a 
| 8 or 609-1™™ 09-0182 0-017 0-015 9°012 OO09T ----  ----  --"" 
1 0-008 0-006 07005 00043 2-0 ---. 0 ---- 
| 10 101% 6 0-0 0-002 0°0018 oo oe ees 
00 ae ; 
es 11 1221 90009 _0°0007 0°0006 00005 0°00038 -.-- ---- = -==~ 
| 12 14220-0002 0°00015 00001 ---- === ane 
| ie 4605: 90000 - 000009. 0 ee ee 
14 1833 es ous ee is ie oi ats ios 
The two sets of curves ine from beam ate serve 
to render the character of these results m evide In 
Diagram A, are drawn Tsothermals, curves vot equal tem- 
perature, in which the regs are wave lengths, the 
ordinates intensities. Diag gives the ee 
or curves of equal wave fengths with temperatures as ab- 
Scissee and intensities as ordin The first set shows the 
