512 The Inconstancy of Fasciated Races. 



generation. In the fasciated races, on the other hand, 

 we are obhged to hmit our selection to the best represen- 

 tatives of the anomaly; but there is no further reason 

 to suppose that these also possess the highest hereditary 

 values. Thus, an essential part of the selective process 

 as applied to the tricotyls is omitted in this case. This 

 is mainly due to the impossibility of calculating the hered- 

 itary values in the seed pans, and the fact that these 

 would need cultivation on a very large scale in the gar- 

 den. In order to calculate the hereditary values for only 

 20 seed-parents from lots of only 100 offspring each — 

 and even this would hardly give reliable results — 80 

 square meters of the garden would have to be devoted 

 to Crepis, and this can scarcely be done in an ordinary 

 garden. It is to be hoped that institutions will soon 

 be erected where such determinations can be carried out.^ 

 Besides Crepis biennis I discovered one or two other 

 species behaving in the same way and succeeded in rais- 

 ing eversporting varieties from them.- The first to be 

 mentioned is Aster Tripoliiim, of which I obtained a 

 splendid fasciated example with ripe fruits in the autumn 

 of 1900, from this neighborhood. At first I grew the 

 plant as an annual and reached only a low proportion of 

 fasciated individuals as a result of this. The fisfure was 

 7% for the fourth generation. In the fifth generation, 

 however, in the summer of 1894, the plants were sub- 

 jected to better treatment, and more than half of them 

 produced fasciated stems, amongst which many were 

 more than 3-4 centimeters broad. I shall deal with 



My experimental garden contains 75 beds of about 4 square 

 meters each. 



^ BotaniscJi Jaarbock, Gent, 1894, and Bull Scicnfifique de la 

 France et dc la Bclgiquc, public par A. Giard, XXVII, 1896. p. 402. 



