200 



PRINCIPLES OF GARDENING. 



[CH. VI. 



Vegetable albumen . . . 

 Malates of lime and magnesia 

 Malic acid .,,... 

 Malate of ammonia . . . 

 Colouring matter .... 

 Nitrate of potash .... 



20.-25 

 3.50 

 1.00 



1.25^ 



26.00 



13. Superfoetation has been doubted, but as it 

 occui's in the dog, we see no reason for disbelieving 

 its possibility in plants. Capt. Thurtell thinks it 

 may be done by the bee introducing mmgled pollens 

 at the same instant. Then why not, if a similar 

 mixture is inserted by the camel's hair pencil of the 

 cultivator ? I think it quite possible, that different 

 seeds in the same pericarp, may be fertilized by pollen 

 from more than one different male species ; but 

 nothing but the strongest evidence will convince me 

 that the same seed can be effectually fertilized by 

 more than one pollen. M. Foulard gravely asks us 

 to believe that his Rosa perpetuosissima had four 

 male parents, the Bengal, the tea, the hundred- 

 leaved, and the noisette ! 



14. Plants nearly related, that is, closely similar 

 in the structure of their various parts, are those only 

 which will immediately impregnate each other ; but 

 it is impossible, at present, to say what families of 



* Schweigger's Jouni. xi. 281. 



