Mr.Mechi would doubtless have one for these objects alone.

So its cost must not be charged to the account of irrigation.

A single course of iron tubing, a third of a mile long, reaching to the centre of his farthest field, cannot cost more, with all the hose employed, than the drainage of that field, while it would be fair to assume that the iron pipes will last twice as long as those of burnt clay.

They might fairly be expected to hold good for forty years.

If, then, for this period, or less, the process yields ten per cent.