THE AMPHIOXUS. 



I. DEVELOPMENT OF THE EMBEYO. 



METHODS OF INVESTIGATION AND PROCURING OF 



MATERIAL. 



IT is my purpose to describe here somewhat fully 

 the methods of investigation which I employed, my 

 aim being that any succeeding investigator may 

 thereby find his labour much lightened and his time 

 saved. It is principally \vith a view thereto that this 

 chapter is written, and it may therefore be omitted 

 by any who do not wish personally to make a study 

 of the Amphioxus. "We will suppose, then, that the 

 reader would wish from the methods to form a 

 judgment as to the reliability of the investigation, or 

 perhaps to discover therein methods which may be cf 

 general service. 



Before everything else, it was my endeavour to 



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