37. 

 5.65 to 6.45 o.o. p*r Hy, even if ii exoluls the t*o inllviiuals (1A ant 3A) 

 slro*dy aentiosad as aberrant, taet this variation baera no apparent relation to 

 aise and thit the average CO n proiuctljn la about the saws for all also*, thus 

 for also 8 it is 6.04 ani for alto C 5.96. 



Duo to tna early death of soma of the tadpolea and abnora^l be- 

 havior of others during ths experiment, no attempt is stada to correlate the 

 inoraaari COg in baaaa or tha decreaeed C0 3 in H3SO4 'i** either weight or area. 

 Tha experlaunt doee she?, ho. ever, 1 14) par oent of increase of C0 2 in baaaa 



and tha par cant of decroaeo of C0 2 In acids both increase aa tha *i»e of tha 

 tadpolas decraasa »n1, as tha relative are* of the tadpoles lnersaees ae tha 

 •isa deore»e:a, tfeia f«ot nay be regarded aa somewhat suggestive. 



The surviving tadpoles of tha abova experlwsint *ere operated upon ani 

 allowed to un-argo regeneration in the earns concentrations aa tha C0 2 deterraina- 

 tlona h«J boon mede for. Tha results (Tabla 27) show that tha concentrations 

 uaod had no effect upon regeneration in eiae A. That elae B was affeotsd only 

 in tha ease of HUSO., in which regeneration waa noticeably retarded, •fell* In 

 thoea of size C which survived to regenerate, tlM regeneration *as aarkadly 



depressed. 



?or tha final aorlas on the affect of else on regeneration 



srlaent 1?) 0.01 g HC1 waa uaad In concentrations of 30, 40, 50 and 60 o.o. 

 per liter. Tha experiments were carried out In 10-lnoh crystallizing dishes, 

 each initially oontoinln? tan tadpoles of turee different olzss. Two tadpoles 

 in tho first control and one in 40 c«c. XI Jutzped out during tha first few 

 days. All in 60 o.o. died without regeneration within ton days. An examina- 

 tion of the data (Table 28) shows thet under nor™ I conditions the average 

 per cent of regeneration Increaeas as the else of the tadpoles decreases. The 

 per cent of regeneration as compared to the controls in various concentration** 

 of BC1 ia practically tna sane for all. (The high per oent of regeneration, 

 as cuapared to the oontrola shown by the tadpoles of teodlun also, is lue to the 



