146 The A'}n('.ric(()i GeoIo(/i.^f March, 1895 
Ihc i-csl ;in(l n'prcscnl tlic ;iUacli('(l iiortioii of llic coralliim. "I'lic lar;;i' 
nnd i-()iiii(l ('I'll is llir iiiil ial (•ni-allil<'. Fisc cells abut iipiiii ll and arc 
niiilually ilistorlcd, wiiilc the initial cell rciains ils |icnpci- siiapc The 
oiicoii llic extreme lefl is so inucli smaller ihaii llie others tlia.t it may 
l)e rclViTcd to tlic tliird scries. X 1. 
Ficrur, IS. .\ii c.vamplc of the same species in which oiilv three sec- 
ondary corallitcs have been developed, or j(ossii)ly where the lourth is 
considerably younger tlian the otliers. X4. 
FioriiK 1!). \ H\w.c/imen i)( Faroxitcx ri>/iirii.s \i\ whicli the lour l)nds 
ol" tile second jieneration are strikingly shown. XI. 
Fkuhk^O. a diajirammatic represeiition ofa hypothetic initial celL 
(ll) whi(di produced .symmetrically six seconthiry cells {/>}■ 
Fku'UK "21. Diayrammatic plan of the same colony if six interstitial 
buds (/) were introduced in tlie ang'les between the inil iai and secondary 
cells, and if each .secondary corallite (0) inherited the tendency to pro- 
duce si.x buds of the third generation (/•). Twenty-fmir such cells can 
be produced symmetrically by the six secondary corallites, with an av- 
erage of four apiece 
Fi<iri!K -■-'. .\ diagram showing' the plan of the initial cell of F/tro- 
xites forhcxi lo illustrate the radii of gemmation. The radii lettered 
{h) would i)i-oduce the four secondary corallite.s toget-hei' with interstitial 
ci'lls of the second, fourth, sixth, etc. series. The ra<lii lettered (/) 
would produce interstitial cells of the first, third, fifth, etc. series in an 
ideally perfect corallum. It is evident that a symmetrical development 
of this systetn would gi\e twehc radii of gemmation. 
Fku'HK ~'). A specimen i)^Fiini.siU>sfi)rbexi\\'\\\v\\ shows cells of the 
first, second, thii'd. foui-th. and fifth series. The initial cidl has an in- 
scribed position. 'I'his colony is a \ery symmeti-ical one, l)ul is tlis- 
torted by l)eing drawn in pers[iecti\e. X4. 
FrcMKK "i I. Fiiriisit(s fiirln'si. This spi'cimen is partly concealed by 
matrix. .\ group of cells have become sejjarated from the rest of the 
colony. The oldest individual of the grouji {<(] appears to have produced 
from its dorsal side four other corallites (/M in the manner of initial cells. 
Fkh'kk 2."). .\ pathologic specimen of Furnxitis forlHsi. The initial 
cell and several of the cells ne.xt i)ro(luced were killed In some catastro- 
phe to I he colony when il was still young. Further de\elopmeid look 
jdace wit hout the co-operation of those cells, and to this fact is probal)ly 
<lue the wedge-shaped form of the colony. X4. 
EARLY PROTOZOA. 
by (;. F. M.\TTHEW, St. John, N. B., Canada. 
Sonie months ago the writer received through the favor of 
Mr. L. Ca3'eux, of Paris, u paper describing certain radiola- 
rians which had been discovered in the pre-Cambrian rocks 
of Brittanv. This article has now been followed by a sliorter 
