5 rE a 29 
The writer has no data available to account for the non-survival of any 
mussels on block ‘‘G4.’’ It is probably purely due to accident. It will be noted 
that the percentage of mussels surviving and their increase in length decreases 
as the level above low-water datum increases and that the percentage surviving 
at the higher levels is very small. It is evident, therefore, that exposure is 
detrimental to the growth of the mussel. 
TABLE. XIV. 
Showing conditions in tidal pool series experiment in 1919. 
o a = 2 o = a 
seg rome ge? oO S| BR |S e-e 
eee es Pe eee eee bad | Gs bese Be 
dies OH oar, cine QO 4; oe o 5 oe Sia 
ere ae tes |e | EB Bee lB Ie 8 aie 
et » bE us oe SEE = EU SE 24 
a |mis| ASS Be Se fae | eS ol, er “hk eS 
PIA) 12:25 p.m. 
il 7.3 6x6 36 0.33 0.25 C0 Ci => 
24.0 1:15 p.m 
26.5 120 eed 
2 9.3 5.5 x2.5 13.75 0.33 0.25 SG S| a 
27.0 [Wi toey & 
24.0 1 PAs ee 
3 12.0 3x3 9 0.29 0.20 1.8 24.0 PALI P.M eg) 
24.5 2:40 * 
26.5 INES ieee 
a 13.9 5x3 15 0.37 0.33 4.95 |— =a 
27.5 3:08.55 
26.2 205gien 
5 15.2 6x3 18 0.20 0.12 mele | 
27.0 Bis ai 
28.0 136 a 
6 16.7 5x 2.6 15 0.20 0.12 1.80 ————— 
28.5 3242) we 
29.0 142 “ 
ve 18.1 7x2.6 18.2 0.20 0.12 Fe NS | 9 | 
29.2 4:03“ 
28.0 je 8 a a 
8 19.3 5.5 x4.5 24.75 0.41 0.25 6.39 
28.0 4:03 “ 
20.5 U5 gene 
9 20.0 4x2 8 0.37 0.25 2 
18.5 Dal ea 
43 
