ior> 



Turning to the other side, it may be said that there are great 

 variations in the color and form of the fruit within the genus l^ac- 

 ciniiun. Our own V, corymbosiivi, var. atrococciiin is an illus- 

 tration of ** berries purple black, without any bloom/' while V. 

 Pe)uisylvanictini, var. nigrnni is another with black fruit, 

 and the cranberries exhibit a wide range of fruit colors. While 

 it is true that in some cases the fruits, changed by fungi, may re- 

 semble those of albinos and '* sports,'* it is also evident that no 

 great difficulty should be experienced in deciding between the 



two. For example, we could suppose a rye grain to vary and 

 become of a dark purple color and pass for ergot, but put to the 

 test the deception is easily removed. BVROX D. ILVLSTED, , 



CJirysantJionuui ^' SuDincl Hcnshazv'' (Garden, xxxvi. 

 381). As our fellow member is responsible for the origin of this 

 C/irysant/icniuin, the Club will no doubt be pleased to know that 

 it is attracting considerable attention in England, and it is said 

 that *' should the variety Samuel Hcnshaw turn out to be as 

 valuable as is anticipated by some, it will be another instance of 

 a plant whose merits were overlooked when it was first sent out." 

 We congratulate Mr. Hcnshaw upon his success. A. II, 



RecJicrches siir la transpiration et rassiniilatioi pendant Ics nnits 



Norvegiejines, M. G. Curtel. (Rev. Gen. de Bot. 15 Jan. 



1890). 



It is a w^ell known fact that plants of northern regions grow 

 more rapidly and often acquire a larger growth than the same 

 species would with us. M. Curtel's experiments at Kongsvold, 

 Norway, were undertaken for the purpose of ascertaining the ex- 

 tent of transpiration and assimilation during the long, crepuscu- 

 lar nights, and he suggests that one of the causes of the greater 



rapidity of growth might be the long duration of chlorophyllian 

 assimilation which uninterruptedly might take place during the 

 whole night. The leaves of Rye and Hieracinni Pilosella were 

 the plants used, and the results of the experiments are summed 

 up in the following*: 



'' 1st. That chlorophyllian assimilation and transpiration took 

 place during the whole of the night of July 31 to August I, 



2d. That particularly as to the assimilation, there was a mini- 

 mum corresponding to the minimum of light/' A. M. V. 



