148 



The notes sub 1"— 8" sufficiently show that in my case 

 the direction lacks constancy. 



That the tension of tissues causing the splitting up of 

 both réceptacle and peduncle, is in close connection with 

 the increase of périphérie parts of the flower, is, I think, 

 self-evident. 



The origin of my raspberries being unknown, we must 

 for the présent forego further investigation into the causes 

 of the case. 



3. A THKEEFOLD CHEEEY. 



In the summer of 1906 I received from Mr. D. N. S t e e n- 

 veld of Amsterdam a monstrous cherry, which is re- 

 presented in natural size in the annexed figure 12. The right 

 and the left one were perfectly normal, the one in the 

 middle on the contrary shows an entirely deviating shape 

 and proved on longitudinal section to lack a stone. That 

 we hâve nevertheless to do with a grown out ovary 

 appeared from the présence of the well-known dot left 

 behind by the style. 



It need be hardly mentioned that botanical literature 

 is rich in notes on double cherries, that even 5 cherries 

 on one peduncle hâve been registered. At the same time 

 we know that the cause of such déviations is to be found 

 either in synanthy, or in bifurcation of the réceptacle or 

 in augmentation of the carpels within the limits of the 

 same flower. Besides we are aware of the great difficulty 

 if not impossibility of thèse cases being distinguished 

 when full-grown, in which stage they are generally come into 

 our hands. But whether there hâve been registered cher- 

 ries of the above description, I am not in a position to 

 tell and that's why I thought it worth while to draw 

 attention to it. 



• July 1907. J. C. COSTERUS. 



