ROYAL MICROSCOPICAL SOCIETY. 99 
June 3rd. 
The secretary drew attention to a slide exhibited by Mr. Baker, 
just received from Herr Miller, and a very remarkable specimen 
of his skill. Inasquare with sides only ;'5 of an inch were eighty 
clear circular spaces in a dark framework of photography, and in 
each space a fine specimen of a diatom with its name plainly 
photographed below it. The whole series could be well seen under 
a 13 in. objective, and the names read. It was stated that Herr 
Moller had prepared slides with 100 as well as those with eighty 
specimens, and was about to introduce similar slides of Echinoidea, 
Holothuride, &e. 
Position of the Touch Corpuscles in the Human Skin.— Mr. 
Charles Stewart’s attention had been drawn to the subject 
by a paper written by Dr. Thin, and though he agreed generally 
with that writer as to their structure, he could not altogether agree 
as to their position. The results of his numerous observations 
showed that they were invariably situated in those papilla which 
were nearest to the furrows of the skin, and never in those 
nearest to the sudoriferous ducts. 
October 7th. 
Supplementary remarks on the Appendicularia.—The remarks 
referred to a species of the genus Ozkopleura, to which, 
though it appears to be new, Mr. Alfred Saunders has re- 
frained from giving a specific name. The author adopts the 
nomenclature with regard to the position of the body originally 
used by Professor Huxley, in preference to that of Dr. Fol and 
M. Vogt of Geneva. The author describes successively the in- 
tegument, digestive system, nervous system, and heart, referring 
to the observations of Dr. Fol. With reference to the heart he 
finds it to be composed of several longitudinal fibres attached 
anteriorly along a transverse fibre, these fibres being apparently 
not united together by a membrane. At all events, the wall 
next the stomach is deficient, neither is there a cell present at 
either end. Mr. Ray Lankester’s opinion, therefore, that the 
heart is a mere churning organ, is so far confirmed. 
New diatoms from Panama.—Mrv. ¥. Kitton characterised the 
new genus Perrya (Kitton) as follows: “Free, elongated, frus- 
tules compressed, sometimes slightly constricted, extremities 
rounded, striz transverse, moniliform, marine.” This genus is 
distinguished from Métzschia, which is its nearest ally, by 
te absence of a keel, and also by its very much compressed 
valve. 
