510 
David H. Dolley 
frora all ganglia of an animal. Those belongmg to the thoracic and 
oesophageal were kept separate from the abdominal until the series was 
completed for the sake of the certainty that theh’ volumes and their 
relations foUowed identical coiirses. Of these series, there are four: of 
central motor ceUs, one of 115 cells from Experiment 9, a normal animal 
(TablelV, TextFig. 2) and one of 82 ceUs from Experiment 23 (abdominal 
