Pulverisation and tillage

1214. Pulverisation should, in all cases, be accompanied by the mixture of the parts of the surface soil by turning them over. It is difficult, indeed, to pulverise without effecting this end, at least by the implements in common use; but, if it could be effected, it would be injurious, because the difference of gravity between the organised matters and the earths which compose soils has a constant tendency to separate them; and stirring a soil only with forks or pronged implements, would, in a short time, leave its surface too light and spongy, and the lower part too compact and earthy.