XXIV INTRODUCTION. 



All the classes of this division furnish animal substances 

 yielding medicinal agents. 



Class 1. The Mammalia, yields 



Bos TAURUS, the Ox and Cow. The No. 3 of this work. 



MOSCHUS MOSCHIFERUS, the Musk animal. The No. 7 of 

 this work. 



PHYSETER MACROCEPHALUS, the Spermaceti Whale. The 

 No. 8 of this work. 



Sus SCROFA, the Hog'. The No. 9 of this work. 



CASTOR FIBER, the Castor Beaver. The No. 11 of this work. 



VIVERRA CIVETTA, the Civet Cat. The No. 12 of this work. 



Ovis ARIES, the Sheep. The No. 13 of this work. 



CORVUS ELAPHUS, the Stag. The No. 16 of this work. 



Class 2. The Aves, yields 



GALLUS DOMESTICUS, the Domestic Cock and Hen. The 

 No. 2 of this work. 



Class 3. The Reptilia, yields 



CROTALUS HORRIDUS, the Rattlesnake. The No. 24 of this 

 work, not considered officinal. 



Class 4. The Pisces, yields 



GADUS MORRHUA, the Common Cod. The No. 4 of this work. 

 ACIPENSER HUSO, the Sturgeon. The No. 21 of this work. 



Thus are represented all the substances of the animal world 

 that yield medicinal agents and perfect the MATERIA MEDICA 

 ANIMALIA. It would be easy to dilate on the uses and ad- 

 vantages to be derived from an acquaintance with this branch 

 of Natural History, nor would it be difficult to show how 

 much that is bright and beautiful in Nature is for ever lost to 

 him who has never become conversant with the study. No 

 part can be viewed as unimportant or uninteresting; none 

 is unworthy of the most attentive consideration, or can fail 

 to impress the mind with feelings of profound admiration 

 for the works of Nature. Marvellous indeed as they are all, 

 the most astounding manifestations of Supreme Intelligence 

 are unquestionably displayed in his character as " LORD AND 

 GIVER OF LIFE," as the Creator and Preserver of all that 

 " live, move, and have their being." 





