82 Scientific Intelligence. 
With the intense competition for priority which rapid publica- 
tion has introduced into all biological work, it is most gratifying 
to see a student who, instead of rushing into print at the end of 
in them the same modesty and ie same good temper which char- 
acterizes every page of this magnificent memoir. _ It is rare to find 
so gentle a critic and yet one who, combining original investiga- 
tion of the first order with an exhaustive kno owledge of the litera- 
ture of his subject, is yet able and willing to place himself on the 
ground sae rt by his predecessors, and judging them by the 
standard of the time at which they w oS ac oa extolling the 
ok tei of river days, at the expense of the pion 
is not too much to say that the Revision of the Ctenophore, 
aries: by si Chun in this faunistic monograph, makes this 
moir by far the most valuable one ever published on the Oteno- 
phore. There is hardly a point in the habits, in the anatomy, in 
the embryology, or in the systematic w working up of the group, 
by Dr. irene ne gh we — differ posed _* him in 
fairices with which opposite opinions are discusse 
moir is remarkable for the great thoroughness with 
which all es points are discussed, the ess of the 
minute anatomy necessary to follow the sioabplicnted accents of 
Pee bone a and the perseverance alate! in tracing the post-em- 
bryonic stages of so many genera. This perhaps is the most val- 
uable feature of this notable memoir. No family has been left in 
the dark, and the flood of light which these eee have thrown 
on the’ systematic relationship of the other Ctenophore is indeed 
es By far the most interesting page of this chapter is 
the complete development given us of Cestus. This genus theo- 
fatitially promised to do more than any other towards unravelling 
the affinities of the Ctenophore, and Dr. Chun’s investigations 
have fully ee these anticipations. 
Excellent as we have found the text to be, it is difficult to 
speak with sufficiently high praise of the plates. To appreciate 
their value one should be familiar with Ctenophore, have watched 
them as the writer of this notice has done, day after day, and sea- 
recognize the truthfulness of these exquisite illustrations, in which 
every structural detail is sharp and firm, while nothing is lost in 
