pid | | TTT Manga 
Tap Ta) Tier I 
1G. 21. Thermographic record of air, and soil at a depth of 30 cm., in nursery, 
from May 2 until’ June 9, 1902. The first part of the uppermost curv o M, 
and 4 to J/ show tracing by instruments in testing room. 4, 4, air eapenme 
&, &, soil temperature. 
