140 REPORTS ON THE STATE OF SCIENCE. 
TRIDIUM—continued. 
Are Spectrum Spark Spectrum 
BS |) — ——_________— Redne to 
7e- : acuum 
Wave-length Inten- eat | Inten- hah Inten- 
2 MAAWG thy 4) (02 bal Aity);|emeee | - Sity 
| and and and 
Hemmer | Chia | A 2be™ | cha: imepas | Chan Jag i) a 
Kayser | Haschek racter Haschek racter ohse | yacter res 
| | | 
3696°6 1 3696-71 | 0-2 1:02 | 7°6 
3696°308 | 3696°27 In 96°3 In 96°23 | O-3n oo o 
96:0 1 95°74 | 0-2n “5 aS 
92°851 92°85 2 92-7 2 92-84 | 0:8 > 
92°3 6 92-44 | 1:0b a eS 
90°86 | O-In o 35 
90°17 0:3 ” ” 
89°476 0 89°4 6 89:45 | 1:0 of “ 
88°321 1 88-2 ii 88°26 | 0°2n 5 = 
87-24 2 87:1 1 87°24 | 0°2 ” ” 
86:09 | O-In 5 Ms 
84:4 4 84:51 | 0-5 a 35 
83:6 1 83°71 | O-In a Fs 
83-0 1 83:09 | O-In ” 77 
82°4 1 82°52 | O-ln * of 
81:9 1 ”» ” 
81°75 O-In ” ” 
81°6 i 81:10 | O-In 3 = 
79°5 1 79°58 | 0-2n AS Re 
78°3 1 78°51 | 0-2n “ oe 
77-1 1 ” ” 
76°7 1 76°83 0-2 ” ” 
75°160 75°15 5 75:0 8 75:16 | 1:0 ” 9 
74:0 1 74:26 | O-In on 3D 
73°2 1 73°30 | O-In 5 BS 
72:0 1 72°15 | 03 A “6 
71:75 0-1 ” ” 
71-03 0-2 ” ” 
69-70 0-5 ” 2” 
68-2 1 68°36 | O-In 5 E 
67°8 if 67-92 | 0°2n oe rs 
66°35 | O-ln + “fH 
65'1 1 65°12 | 0-2b + o 
64:780 64:77 5 64:7 4 64:78 | 0-8 % on 
64:3 1 ” ” 
63°5 1 63°54 | 03 a ae 
63°3 | 1 » ” 
61-867 61°86 | 5 61-7 4 61°88 | 0-9 = “e 
61-527 (Epp p 61-4 2 61°52 | 1:0 “f = 
6067) OL ” ” 
60-18 | O-In “3 op 
59:2 | 1 ” ” 
58-7 1 ” ” 
5815 | 0:7 “p oF 
57°774 0 57°6 1 57-72 | 0:3 1-01 i 
‘ 57:06 | O-In as oe 
| 55°05 | O-In 3 55 
54:5 In 54:55 | 0-2 aS + 
54:0 In + Es 
53°358 1 53°2 | 10 53°34 | 2°3 = 4 
51°5 In a + 
50°3 1 50°47 | O-1 oF 5 
47°857 47°85 2n 478 2 a9 “5 
Oscillation 
| Frequency 
in Vacuo 
27043°5 
46:7 
85:0 
27405°7 
