Chapter X

Inquiry into the interior construction of
the Earth--_continued_ 184
Density of 8·8 times that of water still too high for the
possible compression of the component matter of the
earth as known to us 185
Reasons for this conclusion drawn from crushing strains
of materials 186
A limit to density shown thereby 187
The greatest density need not exceed 6·24 of water 188
Gases shut up in the hollow centre. Their weight must so
far diminish the conceded maximum of 6·24 189
Density of inner half of earth at 3000 miles diameter.
Greatest density may be less than 5·833 of water 190
Supposed pressure of inclosed gases very moderate 191
Meaning of heat limit to density. Temperature of interior
half of shell and inclosed gases must be equal 193
State of the hollow interior 194
Results of the whole inquiry 195