462 Oren E. Frazee 
TABLE III 
Non-stimulated Stimulated 
mm. mm 
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rice ae Cobos SOOUGT ODA COUCEOOOL 1.35 L2iajs oval aratainiare Sie s eaisieleces aeiei ar ereieteee 135 
Hepgcor segue codeed cacasopeaonG - 1.44 TRE Mag aehe’s eicrcictort rere iiete ote eee eeioes ideells 
Aerie elsielepcrsian atta aceke wrsials) as 1.44 TA ieyaic stejarss cares eratsiare ee ee eee Teas 
Guace buat dkoon mobo mo oauaesaate 1.44 LB ih ciolavetesecotiote eres racket 1.44 
Gy Niclas SetaVavels\siplofarovals aielSie lee ots 'ejeveliose 1.44 TO wreiciaitiesjoes cioisle etna oe ae 1.44 
7 def OOOO A ORES RSA DIOS 1.44 D7 cio were cision nya Re an ante ae ee ae 1.44 
and deoneobuovedooNMLadat aooete 1.44 Mos SU coodeBEUDOoohosduoHGoduse 1.44 
(BEoooU conden gbGogsodnoebooDoe 1.62 it HOG onoob ag Sesto HadoMons bE ys 1.44 
TOL EAT acorn OCICS CANE OC AOIOEN 1.62 DOL atecclecrsiect casio tes a aotcroer eae 1.62 
J SETETES a Soadocns coduoesadade 1.44 ANVOL APCs teres. aetai vielen rate iain Meagher 
Experiment 6. Twenty larve of Amblystoma jeffersoni- 
anum ranging in length from 12 to 14 mm. were selected. All 
were of the same age, seven days. All were operated upon 
February 19, 1909. From 2 to 3 mm. of the tail were removed. 
‘Ten were stimulated February 23, 1909, in the following manner: 
Current on for three minutes; off one-half minute; on five minutes; 
off one minute; on five minutes; off one minute; on two minutes; 
then off, totaling fifteen minutes of current. The current density 
was 116.6 0, the voltage 110. The amount regenerated was 
measured February 25, 1909, or two days after stimulation and 
six days after operation. The following table shows the amount 
of regeneration together with the averages for each larva. ‘The 
table shows that the members of the non-stimulated set regenerated 
IO per cent more than the stimulated ones: 
TABLE IV 
Non-stimulated ’ Stimulated 
mm. mm 
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