LLOYD. 



PLATE 7. 



Stomataof Verbena ciliata (fixed in absolute alcohol, stained with Congo red, and mounted in balsam). 



Fig. 1. at 4 a. m. Fig. 2. at 6*120™ a. m. Fig. 3, at 9 "30™ a. m. 



Fig. 4, at 2^30™ p. m. Fig. 5, at 5*130™ p . m . 



