1877.] Botany. 685 
to the forms of leaves. That our readers may make the attempt to 
utilize these ratios, we here transcribe the set given in the diagrams. 
The longitudinal axis is assumed to be in all cases 100. say millime- 
tres, or any units of measurement. 
The first transverse axis, that which cuts the longitudinal midway be- 
tween the base of the leaf and its middle point, is called B,; the second, 
at the middle,is B,; the third, midway between this and the apex, is B;. 
B, 8.6 B; 5. B; 5. 
B, 10. B, 10. B, 10. 
B, 8.6 Ha B, 8.6 
Elliptical, Rhombic, Ovate. 
B; 8.6 B; 3.8 B, 2.5 
B, 10. B, 6.7 B, 5: 
Bi D: B, 10. B, 7.5 
Obovate, Deltoid, Triangular. 
The different woody plants of Austria have been studied by Dr 
Pokorny with respect to the ratios of these axes in the leaves, and the 
_ Tesults are given in detail in the twenty-seventh volume of the Transac- 
tions of the Zodlogical and Botanical Society at Vienna.1 
BOTANICAL PAPERS IN Recent PERIODICALS. — Botanical Gazette. 
September. Dr. J. T. Rothrock, On Poisonous Properties of Legumi- 
‘hos. (Elsewhere noticed.) Professor Lockwood, Shipping Live Plants. 
: (The plants were Nymphea lutea and odorata, Helonias bullata, Erythro- 
| nium Americanum, Claytonia Virginica, Thalictrum anemonoides, Pyx- 
tdanthera barbulata, and an amaryllis. The roots of these plants were 
3 surrounded by moist plastic clay, and then securely packed in a cask 
with sand. They were shipped on May 9th, and were received at Syd- 
hey, Australia, late in June. The Pyxidanthera was dead, but the 
~ Species of Nymphæa were in good condition, and all the rest alive.) G, 
-E Davenport, Vitality i in Ferns. (A plant of Polypodium vulgare was 
a kept in a warm room in a perfectly dry state from November, 1876, until 
_ April, 1877. “It had become so dry and shriveled that it did not seem 
: Possible’ for any life to exist; yet under the influence of frequent rains 
it soon began to start, and is now (August 3) growing moderately. a 
- Several notes respecting collections in Southwestern Virginia and in 
ssouri are given by Messrs. Shriver, James, and Barnes. 
~ Trimews Journal of Botany. September. H.Trimen, On Lavatera 
sylvestris, i in Britain. J. G. Baker, On Brazilian Species of Alstromeria- 
G. S. Jenman, Ferns new to Grisebach’s Flora of the West Indies. H. 
F. Hance, On Intoxicating Grasses. (Elsewhere noticed.) H. F. 
Hance, Thorelia, a New Genus of Lythraceæ. Baron von Mueller, List 
ganna der Kaiserlich-Kénigli ae. dlogisch Se Gesellschaft 
S Wien, 
