30 JULY 1892, Page 26

The Realm of Nature. By H. R. Mill. "University Extension

Manuals." (John Murray.)—This is a somewhat comprehensive

treatise, as the title seems to imply. Physiography forms the backbone ; but we have also astronomy, geodesy, physics, geo- logy, Ice., so that the volume, whatever its uses, reads like a kind of compilation. It is plentifully illustrated with maps and dia- grams, and there is certainly no lack of matter in its pages ; one doubts, indeed, whether this natural " pudding " is not too rich to be easily assimilated.