(JROWTH OF BLOOD-VESSELS IN FROG LARVAE 



71 



.>'P 



Fig. 13 From series shown in figures .1 to 8, showing vessels of stage of 

 May 31 (dotted lines) superimposed on vessels of stage of April 15 (solid linesj. 

 The corresponding vessels are lettered. Enlargement the same for both stages. 



Fig. 14 Same vessels as shown in figure 13. The vessels from stage of May 

 31 (dotted lines) have been reduced, by means of the pantograph, until they 

 have the same dorso-ventral length as vessels from stage of April 15 (solid 

 lines). 



