IN PRACTICAL ASTRONOMY, 
SPECTROSCOPICALLY EXAMINED. 
5. DIDYMIUM NITRATE—continued. 
841 

Solution=, strength—continued. 


















70) 
“ Intensity. | Intensity. Wafers Beat 
pares or | Naenent | Case Paleo bp 
mes Imes. 
Medium dark hazy line 2 27°04 52 910 | Guaucous 
Very faint hazy line 1 27:13 53 619 | GLAUCOUS 
Medium dark hazy line band. 3 27°22 54 259 | GLAUCOUS 
Peet hand 3 Jet 1st edge And va 27-58 56 948 | BLUE 
poem) bandsin violet 754 edge ee 5 27-66 | 57 571 | InpIco 
End all c 0 0 28°21 61 102 | LAVENDER 
Solution= jp. 
Light begins : 0 24:94. 30 030 | Crimson RED 
Mince band 1st edge . eu 25°22 33 591 | Crimson RED 
oe) Od edge a 25°31 34 758 | Crimson RED 
Very faint line in faint light 1 25°51 37 538 | SCARLET 
Maximum Rep Licut 25:92 42 265 | AMBER 
Salt line : 26:00 43 103 | YELLOW 
From and after which a slight shade aay 
Binge band. Lt edge, hazy : ne 8 26°05 43 592 | YELLOW 
2d edge : : as 8 26°13 44 366 | YELLOW 
Maximum GREEN LicHt 7 26:29 45 956 | CiTRoN 
1st edge oe YAoM ays} 48 379 GREEN 
ey eed | 2d edge . 5 | 2658 | 48 828 | Green 
: 1st edge 1 26°65 49 407 | GREEN 
sg broad band { 2d edge 1 | 2671 | 49 925 | GreEn 
Dark hazy line 3 2'7:04 52 910 LAUCOUS 
Very faint hazy line il 27:13 53 619 | GLAUCOUS 
Dark, broader hazy line ’ F 4 DBI ad 54 201 | GLAucoUS 
1st edge . ae DAR aT 56 883 | BLuE 
ee bee DER iedae 7 27-68 | 57 703. | INpIco 
Faint haze line in violet Ny 1 27°94. 59 347 | VIOLET 
End all 0 28:15 60 709 | LAVENDER 
Solution=1. 
Light begins i 0 24:99 30 637 | Crimson RED 
1st edge a 25:23 33 715 | Crimson RED | 
— inna | 2d edge .. | 8 | 2531 | 34 758 | Crmson Rep 
Faint line in faint light il 1 25°51 37 538 | SCARLET 
Maximum Rep LicHt 5 25°86 41 615 | AmpBer 
Salt line hs 26:00 43 103 | YELLOW 
Faint shade begins 1 26:00 43 103 | YELLOW 
Ist edge be 26°04 43 668 | YELLOW 
eagle hen | 2d edge -. | 10 | 2613 | 44366 | YetLow 
Maximum GREEN LIGHT ti 26:21 45 CITRON 

147 

VOL. XXVIII. PART III. 
LO 
