248 Wilson. — The Mucilage- and other 
offer any point of material distinction from normal mucilage- 
glands of the leaves. 
Observations on Seedlings. 
The following species were grown from seed and studied in 
the early stages : — Armeria vulgaris , A. plantaginea , A. lati- 
folia , Statice spicata , .S', sinuata , S. Thouini , S. Bonduellii , 
.S', tatarica , duriuscula , 6'. globulariaefolia, S. purpurata , 
A. virgata , .S', sinensis , S. fruticans^ S. perfoliata, S. Dodartii , 
Plumbago zeylanica. 
Armeria. 
The inspection of the axils of the cotyledons of Armeria 
vulgaris disclosed the very interesting fact that mucilage- 
glands are present there (Fig. 42, *»£■). In the first case 
the cotyledons were a quarter of an inch above the level of the 
ground. The bases of the cotyledons are markedly connate, 
forming a deep cup at the bottom of which the mucilage- 
glands nestle. The basal cells are normally in quadrants, and 
the secreting surface is soon relatively large (Fig. 43, c). The 
Mettenian glands are present on the cotyledons (Fig. 42, g\ 
a fact noted by Maury, who, however, does not mention the 
existence of the axillary glands. 
The basal cells of some of the glands of a seedling appear- 
ing above ground presented irregularity of division (Figs. 44, 
45). A still younger seedling, having the cotyledons just 
separating from each other, bore many mucilage-glands, the 
youngest of which exhibited nuclei and nucleoli (Fig. 46, n). 
Among the few glands of a specimen still under ground 
(Fig. 47) one displayed more regular geometric arrangement 
of the secreting cells than usual (Fig. 48). A germinating 
seedling (Fig. 49), cautiously removed from the seed-coats, 
exhibited a number of Mettenian glands and a few (six ?) 
mucilage-glands. Of two of the latter (Fig. 50), the smaller 
measured -05 mm. in diameter. It presented the appearance 
of a single cell divided into four by exceedingly delicate 
partitions. The larger gland was very peculiar in having its 
