POLYZOA VEGETABLE PREPARATIONS. 1 57 



tubes with some of the water they were taken from, while 

 it has been stated that they may be preserved with 

 expanded tentacles by dropping alcohol into the water; 

 but this is not always successful. 



FIG. 143. 



FIG. 144. 



Books which may be consulted: W. Saville Kent's 

 * Manual of the Infusoria'; Johnstone's ' British Zoo- 

 phytes ' ; ' Micrographic Dictionary ' ; Allman, ' Fresh-water 

 Polyzoa' (Ray Society). 



VEGETABLE PREPARATIONS. The raw material for this 

 branch of study may be found everywhere, the vegetable 

 kingdom being able, perhaps, to supply more objects for 

 the microscope than all the other classes together. Algae, 

 diatoms, ferns, fungi, lichens, and mosses, have already 

 been mentioned, but the phanerogams alone are able to 

 furnish matter for an immense amount of observation. The 



