Hill 37.Hnreau till'lant liulusUvA' S.Ot^pt.of A^iieiillun 



PIATE V 



21 



Si O 



f r: 





-5-.' 



v*:*-' 





^^;2c^ ^^. 



J J LIDS hUcN & Co. N.'V. 



FORMATION OFTHESPORES IN RHIZOPUS NIGRICANS AND PHYCOMYCES NITENS 



