1 72 THOSE OTHER ANIMALS. 



That it is very great is certain. A swarm of gnats caught 

 in a heavy rain-shower will continue their gyrations ap- 

 parently undisturbed, their sight and movement being so 

 quick that they are able to dodge the raindrops in their 

 descent ; and at the. termination of the storm, however 

 heavy, their numbers will be apparently undiminished. 

 This would seem to show an amount of speed and activity 

 relatively unrivalled in any other living creature. 



