ANIMALIA ARTICULATA. 1S1 



GENUS IXODES, Lat. Tick. 



Legs eight, no chelicerse, palpi projecting, serving as a 

 sheath to the sucker, sucker hard and dentated, body covered 

 with a hard skin; Parasitical animals, they are found in thick 

 woods, and fasten themselves upon Oxen, Horses, Dogs, &c., 

 so strongly that they can only be detached by force. 



INSECTA. 



We now enter upon that department of Natural History 

 which treats of Insects ; by the study of which we are con- 

 ducted into a province the most extensive, and by far the 

 most populous of the whole empire of nature. The residence 

 of quadrupeds, as we have seen, is confined to the land ; that 

 of fishes to the water ; while birds are enabled to rise from 

 the surface of these elements into the aerial regions. Nature, 

 however, has assigned a still more extensive range to those 

 animals upon whose history we are now entering. They are 

 found to pervade every part of her dominions, in numbers 

 that defy all computation ; for in nothing does the immensity 

 of her works more strikingly appear than in the infinite num- 

 ber and variety of these smaller productions. 



But although a complete history of the operations of nature 

 in this large and populous part of her empire cannot be ex- 

 pected, yet such a general picture may be given as shall de- 

 monstrate the existence of that great vivifying principle by 

 which she is animated, and by which she is enabled continu- 

 ally to pour forth into existence such immense numbers of 

 organized beings. A lucid classification of such Insects as 

 most frequently occur, and whose manners are best known, 

 presents to us a pleasing view of that protection which Pro- 

 Q 



