248 REPORTS ON THE STATE OF SCIENCE. 
RAODIUM—continued. 
Arc Spectrum Spark Spectrum Redaatioe to 
=... .. ae Vacuum z 
Wave-length Inten-| Wave- | Inten- Oscillation 
z sity length tikes | ieee Frequency 
Rowland Exner and |—————| and 1 in Vacuo 
Kayser an and Cha- | Exner and| Cha- ie nee 
Tatnall | Haschek | racter| Haschek | racter 
| 3088°428 3088°42 2 0°87 | 9:2 32369°8 
| 3087°7 Dh | See es Theta 
87:°534 87°52 | 4 “9 x5 79:2 
| 87:180 0 An 93 82°8 
| | 86:0 Ins eas a 95: 
85-790 85°78 Zi | > saad 97°5 
84:078 | 3084-081 84:10 | 4 84:2 4 35 a5 32415°3 
83°5 1 on) 9:3 21- 
81-714 0 81:8 2 oy ap 40°2 
80-449 0 os +3 53°5 
78°905 | 0 95 53 69°8 
78:5 In + se 74: 
770 1 “r, - 90 
76°736 | 76°75 | 2 ay ae 92°6 
76-006 | | 6 + a 32500°4 
| 75'8 1 ae 8 03° 
74:806 74:82 | 2 shel b nt? 13-0 
| pe eee 1 ” 99 17° 
74:0 1 oe ae 22- 
73°550 | 0 93 AD 26°4 
| 72-4 In * =" 39° 
71-716 US Aa | oe i eae 45:8 
| 7S Te | en | Pal ae 50- 
71°134 71:15 3 ”? ” 51:9 
70°467 Tay: || 25 pS 59:0 
69:9 1 cb) 3 65° 
69-034 | | 2 ” 2» «| 74:2 
| 67°395 | 67°42 6 67°5 2 ~ | 92° 
66°475 0 ; Tear aes 32601°4 
66°333 0 eae ar ii 02:9 
65°800 0 % | 08°6 
| 64°5 In= |< &; ot 22- 
| 63-9 In ey Pe | 29° 
63°700 | 1 pase - ae BI 31:0 
62:544 Or | S625: ged 086) ,, 43-3 
61-782 BLUSOs) G2 ” ” 51:3 
60°001 | | 0 ‘nn > 70°4 
59°9 2 aS re a2 
59°473 | 59°47 29 || si - 76-1 
58:974 | | res Ry a 814 
/ 58°2 1 » ” 90° 
57°996 58°01 4 5 a 91:8 
57°5 1 > 33 97° 
56°452 0 55 is 327084 
55°755 | | 55°76 | O 553 | 6 os és 16: 
54-980 0 B oy 24-1 
54°2 In oa 9-4 a2. 
53°988 54:01 2 | Pe 34:5 
| 52°7' 1 > Bs 48- 
51-780 51:83 | 2 | be 3 58:1 
50°842 | 50°92 2n <5 ue 68:0 
50:050 | Oo | a ah 76:9 
49-919 Qo | oe || See 78:3 
| 46 1 35 ” 82° 
an 
