Report 



of 



The Danish Biologi eal Station 



to 



The Board of Agrieulture. 



IX. 



1899. 



By 



C. G. Joh. Petersen, 



Ph. D. 



Kjøbenhavn. 



C u n ( r ;i 1 t r y k k c r i e t. 

 lltUO. 





t. A 



cc*g»rio,\' 



