266 HARMONICS OF VEGETATION. 



We therefore, shall see how solicitous nature has been 

 to harmonize the reproductive organs. 



In the extreme limits of this work, we have been obliged to pass 

 over many interesting facts of the harmonies of the root, stem and 

 leaves, and are at ence, come to describe, as connected with the 

 reproductive process, the harmonies of the flower. 



6. In looking upon the flower as the organic part 

 destined for the important office of producing seed, our 

 first attention is secured by the calyx or external cover- 

 ing which most flowers have to protect them in their 

 infant state. 



Most flowers have this external envelope, because of the tender 

 structure, of their interior parts; but where the calyx is altogether 

 wanting, the petals or corolla is of a more hardy and permanent 

 structure, and therefore of itself capable of preserving the immediate 

 organs of fructification within. 



7. As the developement of the flower goes on, the 

 corolla gradually increases in bulk, and the calyx ex- 

 pands to give it evolution. 



In this way, the corolla or beauty of the flower is expanded to view, 

 which, while it pleases the eye, and sometimes diffuses a sweetness 

 around, it also appears to be intended to reverberate the rays of the 

 tun upon the parts of fecundation. 



8. The colour of the corolla in different plants is 

 very various, but of whatever shade it may be, it is 

 suited to the situation, or other circumstances which 

 affect its properties, as a reflector of heat. 



White is the best adapted for the purpose, hence nature bestows 

 white to flowers which blow in cold seasons and situations, as we 

 tee in the snow-drop, the lily of the valley, the hyacinth, the narcii- 



