1876.] Botany. 301 
has been known since the announcement by Conrad Sprengel, in the 
last century, that on the stipules of certain Vicias there are secreting spots. 
Schlechtendal, in 1844, described the secretion of “ sugar” by the leaves 
of Clerodendron and Viburnum Tinus. Unger noticed “ sugar-glands” on 
these and on Acacia longifolia. Caspary found similar glands on many 
plants, but it appears to have been Haustein who first thoroughly inves- 
tigated their structure. He thought the glands were in most cases mod- 
ified trichomes or plant-hairs. Reinke has lately reviewed the whole 
subject, and finds that in addition to the sugar-spots and sugar-hairs 
there are also modified serrations of the leaf-blade in many plants, 
which serve as organs for secreting matters; in some cases the exuda- 
tion is of a saccharine character, but often of a mucilaginous nature. 
Prunus Avium and some other species of Prunus, Kerria Japonica, 
Rosa centifolia, Cydonia Japonica, Betula alba, and many other plants 
are spoken of in his memoir as possessing leaf-teeth which secrete freely. 
A few plates accompany Reinke’s paper. 
BOTANICAL PAPERS IN RECENT PERIODICALS. — The Journal of 
Botany, British and Foreign, March, 1876. On New and Rare Fungi, 
9G. Smith, F- S.iTwo:Nor Amaryllidacee from Natal, by J. 
G. Baker, F. L. S. On the Genus Syringodea (in Order Jridacee), by 
J. G. Baker, F. L. S. The Apetalous Fuchsias of South America, by 
W.-B. Helmsley. Some Contributions to Plant-Chemistry, by A. H. 
Church. (Analyses of lettuce, Irish moss, water-cress, beech-scales, elm- 
flowers, outer layers of wheat-grain.) A list of new species of flowering 
plants in periodicals published in Great Britain during 1875. 
Proceedings of the Royal Irish Academy, January, 1875. On Heat as 
a Factor in Vital Action (so-called), by Geo. Sigerson, M. D. (Con- 
cerning the effect of heat on cyclosis, etc., and on the motion of latex.) 
April, 1875. On the Apothecia of certain Algæ, by William Archer. 
n a new Fresh-Water Sarcodic Organism, by William Archer. List 
of Seychelles Myrtaceæ, by J. G. Baker, July, 1875. On the Structure 
of the Leaves of certain Coniferæ, by Prof. W. R. McNab. (A reëx- 
amination of the microscopic anatomy of the section Tsuga of the E 
inus. With plate giving cross sections of the leaves of the six species.) 
Botanical Bulletin (Hanover, Indiana), March, 1876. Chia, by Dr. 
Rothrock. (“ Chia” is a mealy preparation made from the roasted seeds 
of Salvia Columbarie. The meal mixed with water is used as food and 
as a demulcent drink. Quantities of this seed have been found buried 
in graves several hundred years old, a fact which indicates that its use is 
of great antiquity.) Notes on Graminex, by A. H. Young. 
Comptes rendus, No. 3. A. Miintz, On certain Changes in the Cane- 
Sugar of Cane-Juice. No. 5. Heckel, On the Spontaneous Periodic 
Movement in the Stamens of Saxifraga sarmentosa, umbrosa, Geum 
acanthifolia, and in Parnassia palustris. The relations of this phenom- 
enon to the arrangement of the floral organs. 
