Objects for the Microscope. 17 



These are called glandular hairs ; they rise up on a slender 

 stem, and expand into a globular head, filled with coloured 

 or white special secretions, such as we find on Sweet-briar 

 and Moss-rose buds, or on the leaves and flowers of 

 Collomia. 



CUTICLE OF AMARYLLIS. 



This example will show the two-lobed stomata, one 

 kidney-shaped cell on each side ; it is from any part of leaf 

 or stem of the common white Lily ; also compare the cells 

 with those of the 



CUTICLE OF INDIAN CORN. 



This is what is called a siliceous cuticle. All the grass 

 tribe and the plants called Equisetacese, or horse-tails, have 

 the property of attracting silex or flint from the soil in 

 which they grow : the cell walls and stomata become so 

 impregnated with it, that even soaking in nitric acid, which 

 destroys the vegetable part, leaves the skeleton, or frame- 

 work, perfect, as in this slide, which has been thus pre- 

 pared. Observe the finely-toothed edge of each cell, as 

 well as the peculiar shape of the four cells bordering the 

 pores. The stomata are very abundant in grasses ; they 

 cover every part of the stem, and both sides of the leaves. 



CUTICLE OF SACCALOBIUM. 



The Saccalobium is one of the orchis tribe, a native of 

 Asia, found in the Indian Archipelago, and is cultivated 

 in hot-houses in England. The spiral fibre in some of its 

 cells forms a regular network on the inner surface. 



CUTICLE OF EL^AGNUS. 



This is an opaque object ; the scales are very beautiful, 

 and when detached from the leaf and mounted in balsam 

 they polarize. 



The Elseagnus is a native of all parts of the world, from 

 the northern hemisphere down to the equator, which it 

 rarely passes. The flowers of this species are highly 

 fragrant, and abound in honey. 



