Some Air Temperature Readings at several stations on Sloping Ground

Extract

It is well known that the mean temperature falls as the elevation increases, and partly on this account certain crops cannot profitably be produced on high land. But it is also recognised that low lying land is subject to lower minimum temperatures, and is therefore more liable to frost, than land higher up, and low situations are consequently avoided by fruit and early potato growers. Few actual temperature readings have, however, been published.