AIR TEMPERATURES IN FORESTS AND OPEN FIELDS. 57 



Forest air temperature differenecc, woods and open fields ( W—O). 



Fiii. 14.— Scboo. 



Fig, 15.— Maiieuthal. 



Fig. IC— Hadeisleben. 



MINIMA,. 



MEAN. 

 Fig, 17. — Avcrase. 



MAXIMA. 



