74 BOTANICAL GAZETTE. 
’ Additions to the Flora of the United States (Crateegus arbor- 
escens, Sagittaria natans). 
ull. Torr. Bot. Club, 9. 4-5. 1882. 
“ Rosa minutifolia, n. sp. 
ull. Torr. Bot. Club, 9. 97-98, 127. 1882. 
” Note on Picea Engelmanni and P. pungens, 
Gardener’s Chronicle, London, n. ser. 17. 145, 1882. 
’ Pinus fatisquama, n. sp. 
Gardener’s Chronicle, London, n. ser. 18. 712. f. 125. 1882. 
vThe Female flowers of Conifers. 
Am, Jour. Sci. 3, 23. 418-492. 24, 233-935, 1882. 
« The genus Isoétes in North America. 
__ Trans. St. Louis Acad. Sci. 4. 358-390. 1882. 
8 
- Brooks’ Wood Specimens. 
Bot. Gazette, 8. 337, 338. 1883. 
The Bushberg Cat. 3d ed. 9-20, 47-48. 1883, 
nat Onnetuele | p76 9 Vite Warrrrdotrn » 
[Cotteetins) (aeT, 200/Ca tinsiae), 0. pag Eh tiie, 1% 6, 
The Occurrence of Cork between the Annual Layers in the Stem 
of Catalpa speciosa, Warder. 
BY C. R. BARNES, 
t 
the following measurements show : 
First year’s growth, average radius, 7,5™™ 
Second “ ” thickness, 12,5™™ 
Third " é 11,6" 
Bark «“ a & os 
Average diameter of stem, 67,5"™ 
