IRISH GARDENING 



51 



and WW, and these materials ought to produce 

 equal numbers of round and wrinkkd seeds. 

 But each of these kinds is divided in tAvo by the 

 second pair of materials, which should produce 

 equal numbers of seeds having yellow albumen 

 and green. This might be shown diagram- 

 matically as follows : — 



Round 

 1 



Yellow Green 

 1 : 1 



Wrinkled 

 1 



Yellow Green 

 1 : 1 



In Mendel's experiment the following kinds 

 and numbers were produced. He made reci- 

 procal crosses, using, for male parent, at one 



Kabschias for the Plain Man. 



Jiy 11. Lloyu Pkaegek, b.a. 

 The Kabschia Saxifrages are the most choice 

 section of all this beautiful genus — high Alpine 

 sjiecies, forming close spiny cushions brilliant 

 with fiower in the early spring. They are also, 

 as a group, the most exacting and most difticult 

 of cultivation of the Saxifrages. And again, 

 they are a puzzling lot to name, as a strong 

 family resemblance runs through them all. 

 Twenty years ago, when only a comparative 

 few were in cultivation, one could lind one's 

 way among them without much difficulty. But 

 recently, what with the introduction of many 

 rare or new species on the one hand and j the 



SaXIFRAGA BOYDII AND FaLDOXSIUE. 



time the hybrids at another the pure seeds, but 

 as he found no difference produced by this we 

 shall lump the whole : — 



Round sei'ds with \vllow alhunicn ; 5.5. 



Round seeds with i!;rceu albunii'U : al. 



Wrinkled seeds with yellow albunieii : 40. 



Wrinkled seeds with green albumen : 5;!. 



Thus, equal numbers of the four different kinds 

 were ])roduced, and we may now take it as 

 proved, both theoretically and experimentally, 

 that hi/hrifls produce equal numbers of the 

 ))t/Ueri(iU for (he production of the characters 

 borne by their protienij. 



And, since the characters handed on to thcii' 

 progeny are the characters got from Ihcir 

 parents, we may take it that hybrids jn-oduce 

 equal numbers of the materials carried by their 

 parents, themselves, and their progeny. 



Next mouth we shall con.sider a few of the 

 more important deductions which folloAV from 

 this result. 



production of hybrids— generally witli jaw- 

 breaking names— of most of the existing species 

 on the other, they are a rather bewildering 

 group. Noticing the other day that in the 

 catalogue of one of the leading contim-ntal 

 growers no fewer than forty-eight ditTcrent 

 forms are listed, it occurred to me that a few 

 notes dealing with the most satisfactory kinds— 

 that is, those which best combine ease of cultiva- 

 tion with beauty of form— might be useful to 

 rock- gardeners wlu) have not tlie inclination, 

 nor the time, nor the space, nor perhaps tjie 

 cash to specialise in the group. Let me add 

 that the red-Howered species, formerly classed 

 as Kabschias, but now usually placed in a 

 separate section, Engleria, are not included in 

 these notes. All the Kabschias proper have 

 cither white or yellow flowers. 



For most gardeners ease of cultivation is the 

 most important consideration, because niiflfy 

 plants usually disappear sooner or later from 



