268 Miscellaneous. 
layer. = dee cic E setæ or piera: were secreted by follicles 
imbe n or surroun y muscular fibres, and were moved freely 
by the aima In the uon of the rid he found an identity 
with that of the worms. He then called attention to the resemblance 
between the lophophore of the Brachiopods and a similar structure 
in the tubicolous worms. In Sabella the cephalic collar was split 
laterally, and a portion of it reflected. Let this collar be developed 
so as to cover the fringed arms, and a representation of the mantle 
of vem would be attained. The thin and mnseular visceral 
walls suggest similar parts in the worms. The circulating system 
he had not soticiently studied, theugh Dr. Gratiolet had stated that 
in this respect there was a strong resemblance to the Crustacea. 
n regard to the respiratory system, Burmeister had shown that 
there was a resemblance between the soft folds or lamellæ developed 
on the internal surface of the mantle of Balanide and similar fea- 
tures in Lingula ; though the existence of these folds in Lingu’a had 
been questioned, he would presently show that Vogt was right in 
observations. In regard to the reproductive system, he called 
attention to the fact that in one group of Cirripeds the ovaries 
were lodged in the — surface of the peduncle, while in another 
group t the sam e parts were lodged in the mantle. A similar condi- 
tion existed in the Brachiopods, wherein one group the mantle holds 
the ovaries, while in another group they are found in the visceral 
cavity. 
Through Polyzoa, also, he showed that, in their winter eggs or 
statoblasts, a relation was seen to the ephippia of Duphniæ, and the 
winter eggs of Rotifers. 
great importance also, and upon which he laid particular 
weight, were the peculiar oviducts with their trumpet-shaped open- 
ings, so unlike the oviducts of mollusks, and, as he believed, bearing 
the closest affinity to the oviducts in many of the worms, —namel ; 
of Discina, in which we have not only little cirri projecting from the 
shell, but a little = recalling the plug or operculum in some 
of the tubiculous worm 
Of great importance, "uisi was the fact that in the early stage of 
Discina, Miller observed large bristles, and these were move 
by the animal. Smitt had shown that in certain Polyzoa (Lepralia) 
the embryo, besides being furnished with cilia, also supported several 
bristles or setze, which were locomotive; and, finally, in the worms, 
Claparéde and Mecznikow had figured an n embr ryo of Nerine in which 
barbed bristles were also developed. Mr. Morse referred to his com- 
munication before the American Association for the Advancement of 
