313 
illustration, in which a tree of Pinus ponderosa was girdled. 
The trunk below the girdling had four annual rings, while the 
part above had eight—showing that it lived four years after the 
injury and made wood all the time in its upper part, although at 
a standstill below. 
Golondrina Plant—The. C. R. Orcutt. (West Am. Sci. vii. 
190-195). 
An account of the effect of certain Hphorbias as antidotes for 
snake poisoning. 
Grass—A New. Geo. Vasey. (Bot. Gaz. xvi. 235, 236). 
Melica (2?) multinervosa is described as new, collected at 
Brazos Santiago, Tex., by G. C. Nealley, in 1891. 
Flistory of Garden Vegetables—The. FE. L. Sturtevant. (Am. 
Nat. xxv. 694-706). 
The plants mentioned in this contribution are S/achys affints; 
Sugar Beet (Beta vulgaris, L.); Sweet Cicely (Myrrhis odorata, 
Scop.); Sweet Majoram (Origanum, sp.); Sweet Potato (Con 
volvulus batatas, L.); Tansy (Tanacetum vulgare, L.); Tarra- 
gon (Artemisia dracunculus, L.); Thyme (Thymus, sp.); and 
Tomato (Lycopersicum, sp.) 
Is Asplenium Marinum Linn. found in America? W. Car- 
ruthers. (Journ. Bot. xxix. 251). 
According to this note the reported occurrence of this species 
in America is due to errors of determination, and there appears 
to be no foundation for considering it an American plant. 
Leaf-Bearing Terrane in the Loup Fork—On a. F.W. Cragin. 
(Am. Geol. viii. 29-32). 
Contains lists of the leaves and diatoms found in a lacustrine 
marl deposit, probably of miocene age, near Alpine, Indian Ter- 
ritory. 
Mexican Grasses. F. Lamson-Scribner. (Proc. Acad. Nat. 
Sci. Philadelphia, 1891, 292-309, PI. XIII. and woodcuts). 
An enumeration of the thirty-six species collected by Mr. 
Pringle in 1890, with critical notes and descriptions of the following 
as new: Hilaria cenchroides, H. B. K. var. ctliatus; Muhlenbergia 
Schaffneri, Fourn., var. longiseta; M. articulata; Deschampsia 
Pringlei, Danthonia Mexicana; Bouteloua stolonifera; Leptochloa — 
Mexicana; Brachypodium pinnatum, Beauv, var. caspitosus, 
