426 Max Mapes Ellis 
four jars (designated as Series D, E, F, and G) were kept at the 
following temperatures: 
DEGREES Fs 
SELES MID Merteye aero Nays cel feie ove seyere) asics ls Sheree saree cia gualana oleisiaters eleva Meer cavers /avaraheretarepeiei terete 76 
Series Mie eee toe gaia hate cate ie bleieia oS aysitia'n Rial savatawm eich osayaye a ofeisteisteke aie e'slal wey renters 66 
SGTLES ME acts ate o(etvies sl ehevets (ole b's: 001g elo(e, ole tats’ signs inis\eve wvcue teicher sal atelovoueteverio1ateteleoelorenerete tensors 57 
Sistas (Ca oso gqnaaa Gn GGetinn OC OCU Cun en Roane Srna ne oemctontonebadaroade o's 47 
Ten tadpoles in each series were left uninjured, while the 
remaining thirty were operated upon thus: 2 mm. were removed 
from the tails of ten; 5 mm. from another ten; and 10 mm. from a 
third ten. At the end of five days the animals of Series D showed 
a distinct regeneration; accordingly, measurements of all the 
series were taken. No attempt was made to keep individual 
records, but the measurement of every animal in each series was 
used in computing the averages. 
Series F and G (57 and 47° F.) showed no regeneration at the 
end of this first five days. The wounds were healed and the 
animals as active as when first collected, but there was no new 
tissue to be measured. On the other hand, however, both Series 
D and E had regenerated. The average regenerations are given 
in Table 3. 
TABLE 3 
| | | = | - 
| TEMPERA- | | § DAY REGENERATION I2 DAY REGENERATION 
AMOUNT 
TURE - 
| y,| REMOVED | | 
BETS BE | Amount Per Cent Amount | Per Cent 
| | 
mm. | mm. | mm. 
Series D....... 
. Nieess6b. S| Ze | cemrOsy 35 a7 35 
Series-E...c25... 66 & | 0.8 16 | 1.7 | 34 
