( 386 ) 
unto 1.59712 units, it was transmitted to the muscle. With a 
stimulus of 1.98 units we practically reached already a maximum 
contraction. For the nerve the transmissible maximum was only 
reached with about 33 units (in Table I in the foregoing). 
We simply recall to mind this fact here, with the intention of 
making its application afterwards in due season and place. 
Another organ for which accurate numbers are to be found in 
WALLER is the eye. 
For this organ I found the following series of numbers, calculated 
in the tables inserted below. 
Tables IV and V both relate to the excitation of the retina by 
hight of growing intensity. 
TABLE IV. TABLE V. 
A. WALLER. Brain 1900. Pag. 25. A. Warrer. 1900. Pag. 26. 
(Fig. 22 1. c.). 
AOS 02 AG) ee 
Bi 0.324965 ba 0.6382 
C = — 0.14981 C = — 0.44257 
R E cale. |EHmeas. | ) R | E calc. Em al 
‘ | 0. | c | e Q 
I 
gel od Ban S96) BA | OES OB BE ARO | AA 1 Oe a8 
— 
bo 
2 | 56.154 | 58 + 1.846 58.367 60 + 1.633 
71.565 72 + 0.435 
82 — (Oh 
| 
| i 
| 
5 | 90.746 | 90 | — 0.746 
eo} 
~ 
Ge 
rd 
D 
jm 
~I 
ot 
—_ 
cS 
Lo 
=) 
Bp? = 5.2851, on = 1.6179 
Finally Table VI offers us the results obtained by electrical 
excitation of the retina. The magnitudes of stimulus are expressed 
in ergs, whilst the effect is measured again by determining the 
strength of the action current. 
