ELEMENTS 



E N T O M O L G Y. 



So great is the number of natural bodies on the face of our eartb^ 

 that on a general view the mind recoils at the attempt to investigate 

 them as impossible. But the invention of systems has facilitated the 

 task; and every natural object can be traced by certain characters to 

 its place in the system, whether natural or artificial. 



Those who with a philosophical eye have contemplated the produc- 

 tions of Nature, have all by common consent divided them into three 

 great groups; namely, the Animal, the Vegetable, and the INIineral 

 kingdoms. 



Animals are distinguished by being organized bodies, which have 

 life, sensation, and are capable of voluntary motion. 



\'egetables arc organized bodies, which are endowed witli a living 

 principle but want sensation. 



Minerals are unorganized, without life or sensation. 



iioology, or the study of Animals, is not only the amplest and most 

 difficult, but the most pleasant and profitable part of Natural History. 

 The following is the system of the celebrated Linne. 



Division 1. A heart wilh two auricles and two ventricles; mtnn and red 



blood. 

 Class I. Mammalia. Viviparous animals, or such as suckle their young. 

 Class II. AvES. Oviparous animals. Birds. 



Division 2. Heart zcith one auricle and one ventricle ; cold and red blood. 



Cia-ss III. Amphibia. Animals breathing arbitrarily through lungs. 

 Class IV. Pisces. Aijimals with gills, i'ishes. 



Division 3. Heart with one ventricle, no auricle; white and cold blood. 

 Class V. Insecta. With -antennae, and undergoing transformations. 



Insects. 

 Class VI. Vermes. With tentacula, and undergoing no change. Worms, 



