208 BOTANICAL GAZETTE. [ August, 
the white pine. The cells lining the resin passages of cortex, 
wood and leaf, form resin which they afterward pour into this 
canal. The cells surrounding the epithelium were found to con- 
tain a large amount of starch. The walls of these surrounding 
cells seemed to be thicker before growth started in the spring 
than afterward, sections cut from the tree in February showing 
thicker walled cells than those cut in April or May. 
Notes on Campanula Medium. 
BOLLING W. BARTON. 
The plant upon which observations were made does not cor- 
respond satisfactorily with figures or description of this species, 
bu am assured by the best authority that it is nevertheless 
Campanula Medium. Only a single plant was under notice, and 
already many of its flowers had so far passed that the determi- 
nation of several details of conduct of promising interest had to 
be deferred. 
| ers in question are of a delicate pink or rose color. 
The corolla tube is about 1} inches in length and ? inch wide at 
hairs. Reflexed lobes from between the sepals quite conceal the 
ovary. The flowers are uniformly erect and not horizontal or 
drooping, as is characteristic of many species. This character 
holds good until the corolla withers, when it may incline some- 
what to one side. For the rest the structure is ‘essentially like 
linear introrse anthers, which lose their pollen on the hairy sty le 
as the flower unfolds, a good example of proterandy. Atterition 
