OR, THE HOME-CULTURE OF FRESH-WATER PLANTS. 
him a lazy fellow, and telling him to kick a little, 
and show the lady how healthy and robust he is. 
It is impossible, from the causes just described, 
to keep full-grown Progs in Aquaria; but it is 
well worth while to obtain some of the spawn in 
the proper season—April or May—and place a small 
quantity in the tank. The development of the tad¬ 
pole from the egg state, till it is on the verge of be¬ 
coming a perfect Prog, will afford a continuous 
succession of interesting phenomena for curious 
observation. Many interesting things might be 
told concerning Progs, did space allow, but con¬ 
sidering them as unfit inhabitants of the Aquarium, 
except in their tadpole state, this is not the place to 
dilate upon the history, the anecdotes, or asso¬ 
ciations connected with them. 
The small Climbing Prog of continental Europe 
(Rana arborea) might, however, form a very pretty 
object for the island of the Aquarium, which, if only 
as a means of cultivating semi-aquatic plants, such as 
the Sundew and Porget-me-not, should always form 
part of the arrangement. If such a miniature 
island be made the abode of the Climbing Prog, a 
small branching twig, such as that represented in 
Plate VIII., on which the little creature is re¬ 
presented, should always be furnished. With such 
97 H 
