M'

0-1856

1-50940

Sarasin

1-444

1-42676

Carvallo

0-19881

1-49629

ji

"-4733

1-42653

Paschen

0-20243

1-49326

>)

I-S7IS

I  -42607

>)

0"206l0

I -49041

J)

1-6206

1-42592

J)

0-20988

1-48765

))

1-7680

1-42517

1)

0-21441

I -48462

»)

1-9153

1-42438

j»

0-21935

I -48 1 50

>)

1-9644

I -424 1 2

>)

0-22645

1-47762

j>

2-0626

1-42363

»>

0-23125

1-47517

ji

2-1608

1-42317

II

0-25713

1*46476

jf

2-2100

1-42297

,,

0-27467

1-45958

»»

2-3573

1-42208

II

0-32525

1-44987

j»

2-5537

I  -42092

,,

0-3401 5

1-44775

JI

2-6519

1-42015

,,

0-34655

1-44697

J)

2-7502

1-41969

II

0-36009

1-44535

»»

2-9466

I -41823

jj

0-39681

1-44214

jj

3-1430

I -41704

II

0-41012

I-44I2I

)>

3-2413

1-41608

„

0-48607

1-43713

Paschen

3-5359

1-41378

11

0-58930

1-43393

j»

3-8306

1-41121

II

0-637

1-43292

Carvallo

4-1250

I  -40850

,,

0-65618

1-43257

Sarasin

4-4199

1-40559

II

0-68671

1-43200

»>

4-7147

1-40244

,,

0-700

1-43192

Carvallo

5-0092

1-39902

II

0-71836

1-43157

Sarasin

5-3039

1-39532

II

0-76040

1-43114

)»

5-598S

I -39 145

11

0-777

1-43096

Carvallo

5-8932

1-38721

II

0-878

1-42996

"

6-4825

1-37837

II

0-8840

1-42996

Paschen

7-0718

1-36808

II

1-009

1-42904

Carvallo

7-6612

1-35672

II

1-1786

1-42799

Paschen

8-2505

1-34444

II

1-187

1-42804

Carvallo

8-8398

1-33079

II

1-3751

I -42696

Paschen

9-4291

1-31612'

•  I

These  values  can  be  expressed  extremely  well  by  the
formula  (Paschen) —

where  a=  =  2-03888,  M2  =  o'oo6i66,  V  =  0-0086959
k  =  0-003200,  h  =  0-0000029195.
The  following  values  have  recently  been  obtained  by
GiflFord'—

'  This  value  is  the  mean  of  eight  observations,  two  of  which  differ
somewhat  from  the  rest ;  the  mean  of  the  remaining  six  is  r3l593-

*  Proe.  Roy.  Soc,  70.  329  (1902) ;  and  84.  193  (1910).
96


SPECTROSCOPY


Mn  io~-B  metres.
>*

K  in  io~^  metres.
