Oct., 1923] 
SNELL — EFFECT OF HEAT UPON FUNGI 
411 
structures might be of service in checking decay through drying out of the 
timbers. Heating before structures are painted or occupied is recommended. 
Inasmuch as the five fungi tested are the most common destroyers of 
structural timber and are more resistant to heat than the dry-rot fungi 
(.Merulius spp. and others), it is concluded that various kiln-drying and 
wood-preservation processes should sterilize the wood treated, inasmuch as 
the data show that sufficient heat is applied in most, if not all, cases to 
accomplish this result. 
Department of Botany, 
Brown University 
LITERATURE LIST 
1. Falck, R. Die Lenzitesfaule des Coniferenholzes. Pp. xxxii + 234, 24 figs., 7 pis. 
Jena, 1909. (Moller, A. Hausschwammforschungen. Heft 3.) 
2. -. Die Merulius-faule des Bauholzes. Pp. xvi + 405, 73 figs., 16 pis. Jena, 1912. 
(Moller, A. Hausschwammforschungen. Heft 6.) 
3. Hoxie, F. J. Dry rot in factory timbers. 2d ed. Pp. 107, 70 figs. Boston, 1915. 
4. -. Treated lumber for insulating roofs of moist factories. Proc. Amer. Wood Pres. 
Assoc. 17: 362-369. 8 figs. 1921. 
5. Humphrey, C. J. Laboratory tests on the durability of American woods I. Flask tests 
on conifers. Mycologia 8: 80-92. PI. CLXXXIII. 1916. 
6. Snell, W. H. Studies on certain fungi of economic importance in the decay of building 
timbers, with special reference to the factors which favor their development and 
dissemination. U. S. Dept. Agric. Bull. 1053. Pp. 47, 3 figs., 8 pis. 1922. Litera 
ture cited, pp. 43-47. 
7. -. The effect of heat upon wood destroying fungi in mills. Proc. Amer. Wood 
Pres. Assoc. 18: 25-29. 1922. 
8. Tiemann, H. D. The kiln drying of lumber. 3d ed. Pp. xi + 318, 54 figs., 9 pis. 
Philadelphia, 1920. 
