82 



The Microscope. 



tained in the well-known red globules stilted on little 

 stalks on the stem of the moss-rose. It is also to be 

 found in some internal cells in an orange-rind, and in 

 the leaves of the myrtle and magnolia. Some plants 

 contain crystals in the ceils of their cuticles ; the 

 hyacinth affords an example. Wax, gum, and sugar 

 are also to be detected in cells. 



The rotation of cell-contents is one of the most 



No. 8. Vallisneria spiralis ; (a) the plant growing in a jar of water ; 

 (b) portion of the leaf, magnified. 



curious and beautiful spectacles afforded by the micro- 

 scope. The best examples of it are found among 

 plants which grow under water; and of these the 

 Vallisneria spiralis is peculiarly fitted for its exhibition. 

 The Vallisneria is an aquatic plant that grows abun- 



