REFERENCES 283 



Weir, J. R. A Needle Blight of Douglas Fir. Journal of Agricultural Re- 

 search, Vol. 10, Washington, 191 7, pp. 99-104. 



Weir, J. R. Effects of Mistletoe on Young Conifers. Journal of Agricultural 

 Research, Vol. 12, Washington, 1918, pp. 715-18. 



Weir, J. R. and Hubert, E. E. A Study of Heart-rot in Western Hemlock. 

 Bulletin 722, U. S. Department of Agriculture, Washington, 1918. 



