ZOOLOGY. 277 



entire as possible ; the animals may be killed instantly, by 

 emersing the Madrapore, Coral, or Sponge, in spirits, and 

 afterwards cleansing them in warm water ; in packing, they 

 should be well secured from rubbing against each other ; as 

 friction would completely destroy the shape of the pores ; 

 each specimen should separately be enveloped in paper, and 

 bran, saw-dust, or sand, may be used in packing them up, 

 so that the case, or whatever may be used to pack them in, 

 should be completely filled, and well shaken down, previous 

 to the package being finally closed ; these are the only cir- 

 cumstances necessary to be attended to in packing. For 

 the arrangement of these various genera, Cabinets offer the 

 most convenient form for display, as likewise for the associ- 

 ating the nearly allied species ; their form must be left to the 

 taste of the collector ; the drawers should be strong, and 

 have glazed tops or lids, which will Jceep the specimens free 

 from dust, and also prevent their being handled, which often 

 occasions accidents. 



Of the last order of this class we have before remarked, 

 they being animals, of whose existance we should be entirely 

 ignorant, were it not for the use of the Microscope, any in- 

 struction for their preservation must be useless ; to the 

 Microscopic observer we may just add, that all stagnant and 

 putrid waters abound with Animalculos, particularly in the 

 summer months ; they are also met with in numbers, in the 

 juices of decaying animal and vegetable substances ; water in 

 •which vegetables have been boiled, and suxTered to cool in 

 the open air, will often, after the lapse of eight or ten hours, 

 seem to become a living mass of Animalculae ; to inspect thvm 

 it is only necessary to place a single drop of the water in the 

 concavity of a watch glass, and then place it under the mag- 

 nifier. T 3 



