170 EXPLOITATION OF PLANTS 
special references to the latest borings in the Netherlands, Belgium 
and Westphalia,” by W. A. J. M. VAN WATERSHOOT VAN DER 
GracuT and W. Joncmans, 1909. Pp: viii, 437, 10 pls., 14 figs. 
The Hague. 
“ The Origin of Coal: with a Chapter on the Formation of Peat,’”’ by 
D. Wuite and R. TuIEssEN, 1913. Bureau of Mines Buil. 38. 
Pp. x, 304, 54 pls. Washington. 
PRINTED IN GreaT Britain By RicHaRD Cray & Sons, LimitTep, 
BRUNSWICK ST., STAMFORD ST., S-E. 1, AND BUNGAY, SUFFOLK. 
