852 
bath can easily be made to order, and to the bottom of the recep- 
tacle brass strap-springs can be so riveted as to sustain the recep- 
tacle at any height by pressure against the side of the pocket. 
Prof. Rowlee presented the following notes on the branching 
of oaks: 
I. Our species of trees differ very widely in their method of 
branching. All, however, with the possible exception of the 
cottonwood, agree in that the branches are produced from the 
buds nearest the terminal bud of a season’s growth. No group 
has this peculiarity in so marked a degree, however, as the oaks. 
In them the internodes near the terminal bud are shortened and 
the branches appear close together. The branches appear in 
periods upon a main branch, each branch-bearing region being in 
the immediate vicinity of a season’s terminal bud. This peculiar 
method of branching contributes toward the rigid character of an 
oak tree. It is primarily due to the position of the branches and 
the short nodes in that region. 
II. Normally oaks make a definite seasonal growth terminated 
by winter bud. A tree (Quercus macrocarpa) in the writer's yard has 
departed from this mode of growth during the present season in 4 
very decided manner. Early in the season, in May and early 
June, the tree in question developed normal annual shoots, each 
terminated by a winter bud. In the early days of July these 
winter buds swelled and developed into leafy shoots duplicating 
the growth already made. There was more contrast between the 
first and last leaves of the last growth and the leaves were very 
light colored. The question naturally arose whether the double 
seasonal growth in length was accompanied by double cambial 
growth; sections show that up to the time of the investiga 
tion (August) but a single ring had been formed, that is, the cam- 
bial growth had been continuous. 
[In the discussion which followed this paper it was stated that 
fruit trees frequently made a double seasonal growth in one 
year, and that autumnal flowering of fruit trees was accompanied 
by this phenomenon. | 
III. Specimens of white oak branches were exhibited illustra- 
ting an unusual degree of variation in the branches of an in- 
dividual tree. This tree is isolated from dwellings and from other a 
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