158 REPORTS ON THE STATE OF SCIENCE. 
TRIDIUM—continued. 
Are Spectrum 
Spark gaa R eduction to 
! jena acuum | Oscillation 
Rare tret mantel tenet \initbensitiy) Frequency 
Exner and yo Exner and | and 1; | ees 
Kayser igs aidnale Character Hanahok ‘Character| A+ | at 
3 Ye as eg ae eee ees 
30187151 2 3018-1 In 0°85 | 95 33123°5 
17:450 3017:43 L 17-4 1 so itueeeen 31:2 
16°8 1 Pa ees 36° 
16°550 16:55 3 4 3 40°9 
16°4 2 ag a 43° 
15°8 1 oe 49- 
15:1 1 os 33 57: 
14°854 1 14:9 i A a 59°6 
14°585 1 146 I ” ” 62°5 
14:3 1 33 5 66: 
13:2 1 A a 78° 
12-984 1 13-0 1 oy x 80:2 
12°695 12:71 2 aa a 83:3 
12:4 1 .s 5 87: 
11-812 11°84 3 11:7 1 _ . 92°9 
10-020 10:03 2 ” » | 882128 
08-753 1 08°8 1 aa) |e ersp 26°8 
08-5 1 39 a 30: 
07°838 |. 0 As 37:0 
07°745 0 | 07:7 2 ” ” 38:0 
} 06°5 1 5 i 52: 
06°3 1 ‘ 4 54: 
05:7 1 a I ose 61: 
05:338 05:33 2 ” ” 64°7 
05:1 1 ry 67° 
04°7 1 A aA 72° 
04:429 0 sa weil” Wee 74:7 
03-761 03°78 4 03:7 1 = 82:0 
03°2 In 5 *» 88- 
02°375 1 3 a 97°5 
02-0 2 ig Bn ae 33302- 
01°6 1 ae | Rises 06: 
01-383 0 ae ieee 08-5 
| 01:2 1 3 AS 10: 
01:0 1 5 5 12° 
00-149 OO35>, | 2 | 00°2 1 5 3 23°7 
2999: 1 3 5 27° 
2999-155 0 99-2 In “3 56 33°2 
98°7 1 Py PA 38" 
97°8 1 9 Me 48: 
2997°54 3 97°6 2 4s 9-6 51:1 
97-314 97:31 2 97°4 1 13 Bs 53°6 
| 96-785 0 tah owe 59°5 
| 96-202 96:20 | 4 “3 B 66:0 
95°5 In See oe 74: 
| 94°8 1 a5. Hea Se 82° 
| 94-7 1 lhe 83° 
93°751 | 0 93-8 1 ee 93:3 
93°5 1 wee 5 96- 
93°184 ees 93°2 In roa ere: 99-6 
91:9 In Saar el ass 33414: 
91-520 1 91°7 In 53 Ps 18-2 
90:746 90°77 3 90°7 1 pe P 26-7 
90-1 1 ee al 34: 
