DYNAMICS OF MORPHOGENESIS 



187 



benzamid afford a complete confirmation of the conclusions based 

 on the work wdth alcohol and KCN. 



The records of the two following series show the results with a 

 concentration considerably above the minimum (Series 566) and 

 with a concentration near the minimum (Series 564). 



Series 566, A 1, B 1. Worms 8 to 9 mm. in length, all from the 

 same stock. Lot A 1, ten worms at 21°C.; Lot B 1, ten worms at 

 11°C. Condition recorded every fifteen minutes, table 7. 



The worms used here were rather small and young, with a 

 relatively high rate of reaction. Lots A 2 and B 2 of the same 

 series consisted of very large old worms: in those disintegration 

 proceeded much more slowly, but the worms at the higher tem- 

 perature died first, as in table 7. In other series similar results 

 were obtained. 



The table shows clearly that Lot A 1 disintegrates more rapidly 

 than Lot B 1, although the coefficient of distribution is lower in 

 the case of Lot A 1. On the other hand, it is evident that the dif- 

 ference in rate of disintegration between the two lots is very much 

 less than in alcohol and KCN series with the same tempera- 

 ture interval. At first glance, the obvious conclusion seems to be 



TABLE 7 

 Worms in benzamid, 0.04 fn. at 12.00 noon, November 15, 1912 



