278 MR. NEWPORT ON THE IMPREGNATION OF THE OVUM IN THE AMPHIBIA 
Twenty minutes after narcotization, in theflmlwayas 
tozoon had been observed m ® fecundated, no chamber being 
above to <Aree other eggs, but not one of th of the spermatozoa at this 
formed within them, and no embryo was j, ^re was stiU a 
time were dead, as was shown by the looping of then bodies, but there 
quantity which had been simply narcotized and lay which 
became partially fecundated. 1 wn <5 hpo-un to be formed, but its 
underwent segmentation, thL perished. The second was not 
development was not ^ been fertilized at so long a period 
rrauidr;r— - 
been effected by revived spermatozoa. _ 
their admixture with very weak solution of Tfler a few 
about ten minutes it had almost entirely ceased, as only a tew 
“e“:e supplied, by means of the pin’s head, with these narcotized sper 
inree e,g JV of these eggs, and one of 
Tern underwent segmentation, and at the end of the fifth day an 
to be produced, but its development did not proceed, and t »g 
‘irfi’jtere then supplied copiously by means of the loaded pin's head three 
I-Pfl to each nearly the whole of the spermatozoa employed bem., then in 
.. r.,„„ ...» .» “ 
