ClU'STAt K \N> 1 



CHAPTER III. 



CRUSTACEANS. 



li i> tin- common infirmity of Naturalists, and indeed of all q 

 matie authors attempting general clarification, to comprehend <-\cr\ 

 subject within its bounds, which shall be sanctioned even by implication. 

 . unless for judgment and discrimination, a niiscelluneouN 

 mass accumulates, which, along with pertinent mat tor, ^ includes much 

 which might be assigned to another more convenient position. 



It is now that subdivision resting on analogy becomes essential. -<> 

 that, with the immoderate multiplication of genera, and the unreason - 

 .il>le separation of kindred species, those products of reciprocal resem- 

 blance yet exhibiting sensible distinctions, may be approximated 



Kut the arrangements must be adjusted according to the fart.* "I. 

 tamed from repeated correct observation in tin- wide expanded field <-i 

 Nature. 



The cultivators of science having multiplied of recent years, and 

 .ah being prone to take a different view from his fellow labourer*, it is 

 the principal office of the exi>erienritl practical observer to preserve an 

 accurate and veracious record of such facts as may have fallen under 

 notice in his own department. 



The precise mode of study is scarcely to be prescribed ; it must be 

 regulated by discretion, recollect ini:. however, that the more prominent 

 features of animals are the U-ttei -rimless that examples should be din- 

 tin. -t and mum-roil-, so that illustrations may be readily found arnonj: 



