PRELIMINARY REMARKS. 



Not being able , because of the free combinations 

 and constant changes among the animals in the 

 Aquarium, to describe tank by tank in the order in- 

 which they stand, we have rather chosen to follow, 

 in a general way, the arrangement of the zoological 

 system, and beg the reader to guide himself with 

 the help of the drawings affixed to the walls of th'e 

 tanks. 



These drawings are provided not only with the 

 scientific Latin name of the animals represented, 

 but also with the common names in the modern 

 languages, and each is marked with the number of 

 the page of this guide in which the description of 

 the animal in question is to be found. 



RICHARD SCHMIDTLEIN. 



