DYNAMICS OF MORPHOGENESIS 



•165 



heading 'Stages' indicate the five stages of disintegration. The 

 first time given in the table shows the length of time in the reagent 

 when disintegration was first observed in any case. The numbers 

 in each horizontal column are the numbers of worms of each lot 

 in each stage at each observation. The conclusion of the obser- 

 vations on any lot is marked by a broken line as at 4.15 for lot 

 1 and at 5.45 for Lot 2. 



It is evident from table 1 that the young worms begin to die and 

 disintegrate earlier and that they disintegrate more rapidly than 

 the old worms. The results as they appear in the table are 

 perfectly definite and clear and must have some very definite 

 meaning. 



Since the development of the direct method beyond its early 

 stages, all the records obtained by means of it have been kept in 

 this form. From these tables the results on any series can be 

 seen almost at a glance. 



TABLE 1 

 Series 557 I {Xos. 1 and 4 a). In KCN 0.001 m. 10.15 a.m., October 17, 1912 



