144 



14. Some plants are male and some female. Mr. 

 Miller separated the male-plants of spinach, from the 

 female. The seed swelled as usual, but did not grow 

 when he sowed it. Yet it might have been im- 

 pregnated another way, as appeared from another ex. 

 periment. He set twelve tulips about six yards from 

 any other, and as soon as they flowered, carefully 

 took out the stamina. Two days after he saw bees 

 working on other tulips, and coming out loaded with 

 the dust ; they flew into the first tulips, and left there- 

 in dust enough to impregnate them, which accordingly 

 bore good seed. Thus we see the farina may be 7 car. 

 ried by insects, and lodged ou flowers, which it is fit 

 to impregnate. 



Afterwards he bought and sowed some savoy seed^ 

 and planted out the plants, but was surprised at the 

 production. For he had some red cabbage, some 

 white, some savoys with red ribs, and some a mixture 

 of all together in one plant. The gardener assured him 

 he had carefully saved the seod. Being asked where 

 he had set the plaats for set-d, he shewed him, and 

 said, he planted first a dozen white cabbages, next a 

 dozen savoys, and then a dozen red cabbages. Is it 

 not plain that here the effluvia of one sort impregnated 

 the other ? For did e*ach grain of the farina impregnate 

 only its own kind, this mongrel sort could never be 

 produced. 



An instance of the same kind has been observed 

 with regard to Indian corn : this is of several colours, 

 as white, red, and yellow. If each of these be plant- 

 ed by themselves, they produce their own colour : but 

 if you plant the blue corn in one row, and the white 

 or yellow in the next, they will interchange colours ; 

 some of the ears in the blue corn-rows are white or 

 yellow, and some in the white or yellow rows are blue. 

 That this is caused by the effluvia of one impregnating 

 the other, is manifest from hence. Place a close high 

 fence, between the corn of different colours, and there 

 is no change of colour in any of them. 



The holly is described by all naturalists as bearing 



