Page:Proceedings of the Royal Society of London Vol 69.djvu/107

Rh Results at 4'

Contraction

Contraction

Percent-

Contrac- tion

calculated i'rom the

Difference.

calculated from the

Difference.

age.

observed.

4 per cent.

21 per cent.

origin.

origin.

18-44

3702

3738

-36

3758

-56

19-37

3881

3924

-43

3912

-31

20-68

4022

4168

-164

4105

-73

21-43

4181

4346

-165

4222

-41

21-95

4291

4440

-149

4302

-11

Results at 14'2.

19-37

3685

3706

-21

3712

-27

19-72

3722

3767

-43

3750

-34

20-24

3803

3876

-73

3834

-31

20-68

3849

3959

-110

3900

-51

21-38

3952

4096

-14*

4008

-56

21-98

4087

4206

-119

4099

-12

Results at 24-2.

18 -44

3360

3389

-29

3454

-94

19-37

3486

3541

-51

3589

-103

20-24

3688

3717

-29

3715

-27

20-68

3724

3796

-74

3779

-55

21-43

3822

3932

-110

3887

55

21-98

3959 4032

-63

3967

-8

22-37

4016

4103

-89

4024

It will be evident that in all cases the results up to 19'37 lie upon the straight line drawn from the 4 per cent, origin, and on the other hand those 21-98 upwards lie upon the straight line from the 21 per cent, origin, while the intermediate values lie below both lines. As it would appear from a consideration of the examples given above that the observations in the vicinity of critical points may be represented in certain cases as on either, and in others as on neither of the lines meeting at those points, then such points may be regarded as in a certain sense ideal, and the phenomena as continuous. Some such possibility might tend to overcome the mental difficulty experienced by certain writers as regards the manifestation of sudden irregularities, and throughout the whole course of events from commencement to conclusion one is dealing with combined water and free water, with combined acid and free acid, and in the more dilute solutions with integral or undecomposed molecules as also with their respective ions.