1871.] 



MR. A. MURRAY ON THE STERLET. 



II 



down her horn against the bars of her cage ; for it is only within the 

 last few years that this appendage has grown into its present shape. 

 But it is obvious that nearly similar circumstances might occur in 



Fig. 3. 



Head of female Rhinoceros 



a state of nature, and that the horn thus developed would suffice 

 for the foundation of a new species equally well with those already 

 referred to." 



The following papers were read : — 



1. Note regarding the Young Stage of the Sterlet (Acipenser 

 ruthenm). By Andrew Murray, F.L.S. 



[Received December 1(>, 1870.] 



During the last summer I made an attempt to introduce the Sterlet 

 from Russia into Britain by importing artificially impregnated ova, 

 which was so far successful that I turned loose, in the Duke of 

 Sutherland's river Fleet, from 150 to 200 lively young Sterlets 

 which had come out on the voyage. I gave an account of my pro- 

 ceedings in two papers which appeared lately in 'The Field,' and 

 to these I would refer any one who desires information regarding 

 the practical part of the business. In the course of the experiment" 

 however, two scientific observations were made which seem worthy 



