M. M. Garver—Sensation and Volition through the Nerves. 415 
In experimenting upon myself the time required to answera 
signal given on the left hand, as deduced from one hundred 
and nine single observations, was found to be 0°1572’--0009” ; 
when the signal was given upon the shoulder, the time e as 
obtained from sixty observations, was 0°1482”+--0010". The 
difference is 0-009" and the distance, as measured, twenty-three 
inches, hence the velocity from the data, was in this case 
213° le 28°6 feet per seco 
The results can abst best be shown in a table (see table 
I.) All the series from which these results were obtained are 
not given because they would swell the proportions of this. 
article to an undue extent; and also because the establishment 
of the reliability of the numerical results obta _ it is 
expected, can be shown to be of minor importance. 
TABLE I. 
Pe Vee mired | Diff Velocity in 
posiaenS2 | 5% | anna ot | "me Eooure® | Pimanee) Vege) Vane 
Zes signal. answer. time. nerve. 
Fowler (1),| 30 | Left foot, |0-1707” ae 
0412 33°7 
46 | Leté check, ee ee ee 
9-1296 
Garver (2),) 109 | Left hand, (0°1572"+ 0009") ).o» ‘ : 
“i '| 60 |Left shoulder,|0-1482" x-0010"| 0? | 28 1% s13 5356 
(3),| 53 | Left hand, |01686"+-0017"| . c,ar| 9; oe ae 
- 51 |Left shoulder, 1632" £0017! 01546",; 2] in. | A1sat1T-4 
Left foot, |0°1866"+-0014"| | 141. 
105 | Left hip, |017557+-0012"| 111 | 36 im 3T0°T + 45 
Ol ated oimeumtlt tea 108 0008 | 0130" | 164 in. | 105° +101 
cs 
= 
mo 
S 
ve 
Back, ; 
wee po isa" +0010 0098" | 36 in. | 30744476 
-1542 By ety : 
(| 356 lLattsheulder(o-1saaa¢ 7 | 00003" | 28.tm. |. 6000-7 
t will be noticed that the time in (4) and (6) differs con- 
sidtersb iy in the two sets of observations, although taken from 
the same person. The difference can hardly be owing to errors 
in “eee erage for the sum of the — errors is less than 
003”, while the differences refe ‘0061’ and 0074”. 
There seg evidently a change in the pinch power of the 
nerve, or in the mental status of the individual during the 
interval of time which elapsed before the last series were taken. 
Number (4) was taken Jan. 8th ; number (6) a week later. 
Number (7) | gives an extraordina nary result. It is so very 
large that it can hardly be regarded otherwise than as erroneous. 
Doubtless there was a change in condition while taking the 
observations, for all the observations from the hand were taken’ 
before any were taken from the shoulder, and the fatigue inci- 
dent upon taking so large a number of observations is con- 
siderable, so pi at can hardly be claimed that the experiments 
