96 FERN GROWING 



muricatum. 

 keratoides. 

 muricatum. 

 keratoides. 

 , keratoides. 



, spirale and keratoides. 



muricatum and keratoides. 

 muricatum and keratoides. 

 This was to thoroughly test Experiment No. 7. 

 In the pans Ai, A2, and A3, the seedlings were exactly 

 like the parents of those sown. A4 varied slightly between 

 keratoides and Victories (the latter was the parent of kera- 

 toides^. 



In the next six pans, from B. to G., two of the varieties 

 were sown together, and at least a thousand plants were pro- 

 duced. They were all combinations of those sown in the same 

 pan, and no single one was exactly like either of the parents : 

 indeed it is very rarely that when two are sown together 

 (except they are different species) a plant is raised that has 

 evidently been solely crossed by the same variety ; and this, in 

 the author's opinion, is one of the strongest points as regards 

 multiple sperms. 



In the three pans H., I., K. were the combinations of three 

 varieties : most of the seedlings were only combinations of two, 

 a very few were combinations of three, and none were like any 

 one of the parents. 



Why do we not find seedlings like those in the pans 

 marked A. .'^ Simply because a multiple of sperms is requisite 

 to effect impregnation. 



Singularly enough. Professor Vines, of the Oxford Botanic 

 Gardens, suggested that the author should make the above 

 experiments, without knowing that this had been done four 

 years previously. 



