398 
between the two extremes mentioned above, and points out 
that in the peculiar striation of the body he described there are 
indications of the streaming out of its matter into the sur- 
rounding protoplasm; while on the other hand it never com- 
pletely vanishes.. It therefore affords an instance where part of 
the matter of the nucleus divides and part streams out into the 
protoplasm of the cell to be again collected to assist in the 
formation of two fresh nuclei. The author further states that 
he has found other bodies intermediate between the cone-like 
bodies mentioned above and true nuclei; and regards these also 
as nuclei in the act of division, where a still larger bulk of the 
protoplasm of the nucleus becomes divided and a smaller part 
rises with the surrounding protoplasm. 
(2) On the effects of Upas Antiar on the Heart. 
By M. Fostsr, M.A., F.RB.S. 
The author recording the movements both of the ventricle 
and the auricles of a frog’s heart (Rana temporaria), within 
the body, by means of two delicate levers, observed in addition 
to the well-known phenomena of antiar poisoning, a marked 
slowing of the rythm in the later stages of the action of the 
poison. The prolongation of each systole was also distinctly 
marked, especially in the case of the auricles, which, much 
distended in consequence of the partial occlusion of the con- 
tracted ventricle, caused the lever resting on them to make an 
enormous excursion at each systole. So long as any beat was 
capable of being recorded by the lever resting on the ventricle, 
the ventricular systole occurred in its proper sequence. Though 
the whole rythm often became irregular, the phases of each 
cardiac cycle remained regular. 
Repeating the experiment of Schmiedeberg (Bev. zw Anat. 
