174 Charles W. Hargitt 
Now, how do the facts embodied in these tables compare with 
those exhibited by the methods just cited? Do the reaction phe- 
nomena conform in any fundamental respect with those of a 
muscle-nerve preparation, or with those induced in cardiac mus- 
cle by such chemical reagents as Ringer’s solution? ‘The briefest 
comparison of a record of one of the latter experiments with the 
tables under review will quite suffice to show that this is not the 
case. To further test the problem an attempt was made by my 
colleague, Dr. Rogers, to reduce the records to a curve by appro- 
priately plotting them, and thus make the results more easily 
TABLE VI 
Showing comparison of reactions under shadow and tactile stimuli, as indicated by the reaction time given 
in seconds. Two specimens, A and B, were used, an individual record being made of each specimen, 
tested successively by each method. 
A B 
| acs o, 
| Shadow Touch | Shadow Touch 
MERE Reet oh rd Taree eet me | 12 | 50 16 50 
De (rie. siine ngage ciel esis Perera s eotes <he e. exaiel loko 13 40 19 61 
Brstaslath cle regres - Demerardee eM oc ttn aoe | 21 | 50 | 16 94 
A raerahc: coe erent ets tlhe Gielen me ane halete ee | II | 17 | 18 50 
Dodie Gop ain dich ond O Sino OC o. OSO EOC UO.0 13 20 13 45 
Glas Parosiyrite cre sine erclarts aan leiee aelete aise 17 20 20 44 
1 ea Ree ae eR ree MRE ENT ROI | II 2) 12 46 
Sorte ihe tees Seen eh Pee te a een | 20 21 | 15 45 
CR Se AE Oo SOME AICTE Mam cata TEAC ie F 22 40 | 25 74 
UCliaefoabb ab epEnomaDebaAspusBbonooDeouce II 30 | 22 41 
comparable. But this process only served to confirm the obvious 
figures of the tables, namely, that no comparison was possible. 
Thus the conclusion seems unavoidable that the foregoing ver- 
dict is beyond doubt. 
But the query may be pertinent, ought the two series to be placed 
in comparison? ‘To this may be answered, Why not? If the 
earlier assumption that such organisms are definitely adjusted 
machines be pertinent, and this has not been denied, indeed, 1s the 
very point at issue, then any burden of denial or proof must fall 
upon the defenders of the mechanical hypothesis. 
-—— -" # 
