THE SOLAR SPECTRUM AT THE DATE 1877-78. 339 
STEPS or SPECTROSCOPY AccoRDING To INCREASING TEMPERATURE, 
REDUCED TO A UNIFORM TOTAL OF 1000 FOR EACH KIND. 
STEP 1. || STEP 2. STEP 4 STEP 5. STEP 6. 
TeLxuric- |} CoLour- TEP 3. acu . HEMICAL LINES, CuEmicat Lings, 
SPECTRUM-PLACE. | ee Cee aon ae eee ean oie ith 6 to 10 Men 
Freezing. || Chamber. Sparks. Sparks. Condenser Sparks. 
Colour, BU Nira aes ALL, aera Att. |Mean ane Aut.|Mean ce Aux. |Mean oe Att. |Mean 
25000 to 26000 0 
26 27 9 
Ultra-Red. | 27 28 3 
28 29 1 ; 
29000 30000 16 a 
f=) 30000 to 31000 20 OlG A 
| 31 32 7 Bi) Teal A 
| Fl | Crimson- | 32 33 9 9 || 43] 5] 24 4) 92 i. o| 0 IS 
| A Red. 33 34 103 B4 || 22) 3) 12 4) 2 th o| 0 
i ba 34000 35000 120 83 0} o| 0 18] 99 o| 0 o| 60 
RED 35000 to 36000 129 33 Gj Sis al 29) 11 o| 0 o| oO 
: 36 37 173 33 OB al 31] 16 4) 4 © ai 
eae | 87 38 0 36 43] 21) 32 One ial) ts! 19) tall <2) tole 6 
ae | 38 39 87 31 0} 23| 12]| 78] 27) 5all 15] 15] 15] 4] Is] 8 
Orange. | 39000 40000 25 30 22) 47] 34]/ | 18) 9|/ 7} 26] 16|| 27| 26) 26 
40000 to 41000 51 27 || 109] 47} 78]! 0] 382] ie]! 22} 31) 26] 21) 29) 24 
Amber. | 41 42 25 31 65| 49] 57|| 78] 36| 57|| 59] 48] 54) 51) 46] 48 
42 43 94 43 22) 52! 371 27] 32] Boll 59| 39] 49] 42) 41] 42 
43 44 87 101 43] 49] 46|| 27] 40] 34|| 6€] 37] 52]) 45] 40] 49] _. 
Yellow. | 44000 45000 34 41 0] 39] 20/] 541 36] 45]] 44) 40] 42] 59) 38] 44, S&S 
co 
CITRON. | 45000 46000 0 24 || 109] 57| 83i| 104} 50] 77|| 44] 52] 4si 67] 6o| 64 S&S 
46 47 0 30 43/ 91] 67|| 27] 32) 30] 44] 46/ 45]/ 60] 59] 6o| 
em | 7. 48 0 18 130] 60} 95]| 54] 59) 5e6l] 66] 59) 62)| 58) 59) 53) ® 
Green. | 48 49 0 22 || 130] 65] 98|| 27] 68] 48|/ 88] 60] 74|| 62] 64] 63] ‘S 
49000 50000 0 22 o| 62] 31]| 27] 18] 29] 103) 63] 83] 45] 53] 49o| wy 
=e —! 
50000 51000 25 22 o| 42} 21]) 27| 32] 30l] 66] 52] s59|| 40] 49] 44) & 
51 52 0 21 0} 31) 16]]/ 0} 18] oi] 15) 438] 29|| 31] 40] 36 = 
Glaucous. | 52 53 17 18 0} 29] 14|| 78] 27| 59]] 59] 43] 51i| 49} 43] 45 
53 54 17 20 22} 26| 24/| 27) 27] 927|| 44) 43! 44]] 54] 44] 49 
54000 55000 0 18 0! 21) 10|/ 27] 40] 34i] 7] 31] 19]| 42] 34] 38 
55000 to 56000 9 65} 23] 44/| 27] 32] 3o0/] 29] 36] 32]] 40! 36] 38 
Blue. 56 57 24 22; 31) 27|| 27| 36 32|| 37] 38] 38] 47| 41) 44 
Indigo. | 57 58 15 0| 16] 8i| 27] 36| 392i 22) 36] 29]] 42) 35] 38 
‘VioLEr. | 58 59 30 43] 923]! 33]| 54] 45) 5o|| 22] 29] 26] 38] 32] 35 
* | 59000 60000 15 0} 18] 9]/ 54] 36] 45] 37] 40] 38] 42] 39] 4o| . 
—— A 
60000 to 61000 26 65] 16} 40/| 54} 32] 43]] 15] 23] 19|| 18] 27] 22) & 
61 62 26 5} ail 54/ 36] 45]/ 7} 19] 13/| 9) 20) 14, A 
Lavender, | 62 63 24 3 GIN Bil Gall Oi 7| 24) 16 9} 12) 10) ES 
63 64 20 9) 4 gi 4 o| 3] 2 A 
64000 65000 12 4, 9 AV A Za ei S 
65000 to 66000 1 = 
66 67 
Gray. 67 68 
68 69 
69000 70000 
CO ———— ———— | | 
ra | eee... sees 
| 
