Behavior of Tubicolous Annelids  , 71 
Table VI contains a brief record of the comparative reaction of 
two specimens to shadow and tactile stimuli. ‘The longer recovery 
time following the tactile test is naturally what might have been 
expected. In other records similar conditions were found to those 
alluded to in citing the contrasts shown in Table IV, and probably 
explainable on same general assumption. 
But there is more involved in the records of these tables than 
TABLE II 
Showing reactions of specimens H, I, 7, K, L, from deep waters 
AugustI0,Ila.m. ~ August 10, 1:45 p.m. 
Temperature 21° C. Temperature 22° C. 
H I J K L H I J K L 
I = +15 = = Yi We a | = = +10 +12 
2 — = = = = Kees = +10 +10 = 
3 = = = = = = at; 15 aa = = 
4 +25 +25 = +12 = = = +79 = = 
5 +40 = ae a = = = =. = 
6 = = 2 ae = = a = ote 2 
7 = = os = * ath = Be pt a 
8 +28 = +10 = = = - +10 = +10 
9 = = ar its) = = = a ar = = 
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heel ae 
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[tell eal 
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the simple facts of the reactions. As expressions of behavior 
the facts call for explanation and interpretation. A point of more 
than passing significance is that involved in the recovery time 
indicated in the various tables. Does the feature of protrusion, 
following a given retraction induced by shadow or tactile stimulus, 
sustain any such relation thereto as to warrant the conclusion that 
these several aspects are essentially parts of a common reaction 
