FIRST EXPERIMENT. 



*In the month of January of this year the Antholyza Cunonia {Scarkt-fiowered Antholyza) 

 flowered in a pot placed in the window of my dining-room, but it produced me no fruit, because 

 the confined air had not power to waft the/^n;z^ to the stigmas. 



Observing about midday one of the stigmas very dewy, I plucked off, by means of a fine pair 

 of forceps, an anther, and gently brought it into contact with it. The spike remained eight or 

 ten days longer adorned with flowers. 



Then, indeed, cutting the stem in order to preserve it as a specimen in my herbarium, I 

 observed a fruit in that single flower, over which I had placed the anther, which had swollen to 

 the size of a bean. 



SECOND EXPERIMENT. 



The IxiA Chinensis (Chhiese Ixia) flowered in the stove, the windows being shut, and all 

 the flowers had abortive fruit. 



I therefore took away the anthers from the flowers of another Ixia, and with these I sprinkled 

 two of the flowers, and the following day only one stigma of a third flower. 



The germina remained only in these three flowers, which swelled and bore seed; but, indeed, 

 the fruit was in o?te of these three matured only in ojie cell. 



THIRD EXPERIMENT. 



The exterior petals of the Ornithogalum {Star of Bethlehem) so closely connive, that 



although they admit air to the germen, they scarcely suffer the intrusion of the farina arising 



from another flower. This daily presented new flowers furnishing fruit, nor did foecundation fail 



in any one instance. I therefore carefully, with a bent hook, removed the anthers from a single 



flower, and, as I had expected, it happened, that this single flower proved abortive. 



After eight days I repeated the same experiment, and with a similar result. 



FOURTH EXPERIMENT. 



The NicoTiANA FRUTicosA {Shrubby Tobacco) was growing in a garden-pot, and produced 

 flowers and fruit most abundantly. 



From a flower newly opening, I extracted the anthers which had not yet burst, and removed 

 at the same time all the other flowers. 



The germen here neither produced a fruit, nor swelled. 



FIFTH AND SIXTH EXPERIMENTS. 



The AsPHODELUS fistulosus {Onion-leaved Asphodel) growing in an urn, I removed to one 

 corner of the garden, and from one of the flowers which opened on that same day, I withdrew 

 the anthers. 



Hence that germen proved abortive. 



* This dissertation is divided into heads, or sections ; and the first section relates to the Bisexual Flowers^ or flowers where the two 

 sexes are in the same corolla. 



k On 



