738 Mr. Brown on the Organs and Mode of 



Fig. 8. The Corolla of fig. 7. opened and in part removed, to 

 show the state of the contained organs : the figure 

 exhibiting two petals hardly cohering at base ; within 

 these, two distinct petal-like bodies, alternating with 

 them, and which are the antherse ; and two other 

 smaller bodies, which are the pistilla as yet uncon- 

 nected. 

 9. An Anthera taken from fig. 8, and more highly mag- 

 nified, to show that in this early stage it is entirely 

 petal-like, there being no indication of the two cells, 

 of which the first appearance in a somewhat more 

 advanced stage is given at Fig. 10. 



I 11. A Petal of fig. 8. more highly magnified. 



12. The Pistilla of fig. 8, as yet distinct, scarcely at all 



angular, and with no manifest cavities ; so that these 

 two bodies may be regarded as chiefly or entirely the 

 component parts of the stigma. 



13. Two Grains of pollen taken from the pollen mass of the 



expanded flower of Asdepias curassavica. 



Additional 



