28o A. J. Carlson. 



TABl.E VI. 



Jules sp. Antero-posterior. Detail of experiment No. i, Table 



VII, November i6, 1902. Temperature 16" C. 



Distal. Proximal. 



0.40 0.16 



0.37 0.18 



0.37 0.17 



0.36 0.14 



0.36 0.15 



0.37 0.14 



0.39 0.13 



0.37 0.12 



0.40 0.16 



0.40 0.12 



0.42 0.16 



0.44 0.15 



Average. . . 0.38 0.15 



TOTAL LATENT TIME IN SECONDS. 



Transmission time 0-23 sec. 



Length of nerve-cord 6 cm. 



Rate 25.8 cm. per sec. 



TABLE VII. 

 Summary of the measurements of the antero-posterior rate in 

 the nerve cord of the millipede Jules. The length of cord involves 

 32 to 37 segments. 



No. of pairs Tra 

 of records. t 



I 12 



2 15 



3 4 



4 2 



5 5 



6 7 



7 6 



8 6 



9 7 



ID 2 



Mean rate 20 cm. per sec. 



