﻿BOTAXfCAL GAZETTE 



attention on the part of the operator; (2) when imbedded by this 

 method material seems to cut better, since glycerine seems to harden 

 less than alcohol; (3) material may be stored in the concentrated glycer- 

 ine if it be desirable to postpone the imbedding processes. — J. Ben Hill, 

 Pennsylvania State College; State College, Pa. 



BISPORANGIATE CONES OF LARIX 

 (with one figure) 

 In the early spring of the present year (191 5), in tr 



Missoula, Montana, abnormal 



ere observed among normal 

 ones on a single tree of 

 Larix occidentalis. The 

 abnormal cones were about 



the species, and consistec 

 of two parts; the lowei 

 half of the cone pre- 

 sented the normal appear- 

 ance of the stamina te cone 



tot a 



the 



the upper 



half presented the typical 

 condition of the macro- 

 strobilus with bfact and 

 scale. The scales bore two 

 ovules, to all external ap- 

 pearances normal. Between 

 the lower and the upper 

 portions of the cone were 



ing 1 



ales. 



Some of these structures are shown in the accompanying figure. 



The pollen produced in the bisporangiate cone, on those sporophylls 

 where the sporangia were apparently perfect, in its microscopic structure 

 appeared to be the same as the pollen formed in the normal staminate 

 cone on the same branch, except that it was somewhat smaller, measur- 



