(18 THE GEELONG NATURALIST. 
placing the section ing oil of cloves for some time it makes it much 
clearer. 
In deciding upon what colour should be first employed, much 
will depend upon the particular point you want to bring out. To 
show the structure of the laminæ use the blue, because it makes the 
wall cells better than the magenta. I find the easiest way is to use 
the aniline dye, having some of the carmine ready in a bottle. Put 
the sections in this first and then in another bottle with as much 
spirits as will cover them. Having put a few drops of aniline green 
into it, put them under the microscope. If deep enough, wash well 
and put into spirits ready for mounting. 
The preparation of animal matter is somewhat different. Say 
we take the stomach of the cricket. After dissection of the 
object I put it into liquid potassae for some time and then in water. 
Under the condensing lens with two needles you will soon clean the 
object from all extraneous matter. You may then put it into spirits 
till required, unless you want to stain it which is done in the same 
manner as vegetable sections. 
