THE 
MONTHLY MICROSCOPICAL JOURNAL. 
FEBKUARY 1, 1875. 
I. — On some Male Rotifers. By C. T. Hudson, LL.D. 
{Read, before the Royal Microscopical Society, December 2, 1874.) 
Plate XCI. 
It is a trite and very obvious truth, that, in consequence of the 
great growth of science, anyone who wishes to add to the common 
stock and to enjoy the pleasure of original discovery, must be content 
to confine himself not merely to one branch, but even to one twig, 
or, it may be, to a mere twiglet of the great tree of knowledge. 
It is true that there are some whom great natural capacity and 
the happier accidents of fortune enable not only to keep themselves 
well acquainted with what has been done and is doing by others, 
but also to take up with success first one subject and then another ; 
bringing to the investigation of each minds disciplined and en- 
larged by the knowledge of many others. But such cases are rare. 
The great majority of us have neither the leisure nor the talents 
necessary for playing such a part. With ordinary brains, and under 
the ordinary circumstances of life, anyone who wishes to study 
natural history, and yet is not content with doing over again what 
others have done before him, must of necessity be a specialist. 
And to be a specialist is to lie under several great disadvantages : 
it tends to make a man a tedious recounter and a bad listener; for 
a specialist finds it equally difficult to take an interest in other 
peoples’ hobbies, or to get others to take an interest in his. He is 
apt too to lose all sense of proportion : to estimate his discoveries 
DESCRIPTION OF PLATE XCI. 
Ventral view of Notommata Brachionus ; female. 
Dorsal view of the same, to show the muscles, a, curved cilia at the 
base of the buccal funnel. 
A setse-bearing cushion from the head of above. 
Enlarged view of the setae fringing the side of the buccal funnel. 
Dead male of Floscularia Campanulata — dorsal view. 
Side view of male of Notommata Brachionus. 
Ditto ditto of male of new species of Asplanchna. 
Ditto ditto of male of Lacinularia socialis. 
Enlarged view of (6) in Fig. 8. 
a. Testis 1 „ 
b. Penis ) in Fl S s ' 5 ’ 6 > 7 ’ 8 - 
c. Atrophied oesophagus i 
d. Arm-like processes > in Fig. 7. 
e. Third process j 
XIII. 
Fig. 1. — 
„ 2 .- 
VOL. 
K 
