84 JOURNAL AND PROCEEDINGS 
The last collection I made along the corporation drain was, 
I think, early in November. In a field there that had been closely 
examined for years, and several times also during the collecting 
season, I discovered a complete ‘‘Aulocopina’’ and a dark blue 
section of a Rusosignum sponge, which I had been looking for 
for many years. Only single specimens of our Niagara sponges 
were found in many cases, which we are unable to place in the 
museum cases just now. Detached sections of others indicate the 
existence of forms unknown yet. Many years ago the late 
A. E. Walker, who was greatly interested in our local chert 
sponges, expressed to the writer his deep regret that neither of 
us had succeeded in securing a complete form of the “‘spreading 
Aulocopina.’’ This was a name suggested by sections in our 
possession. Another member of this family, which Prof. Rauft 
states has been only found in Hamilton, Ontario, also is not rep- 
resented among our sponges. It presents a central osculium, en- 
circled by quite a number of smaller ones. A third species (fre- 
quently seen) is exceedingly flat, with an oval osculium. It is 
not Dr. Head’s ‘‘Aulocopina Walkeri.’’ Like Aulocopina, an- 
other genera of chert sponges, I understand, has never been found 
outside this district—Rusosignum, the wrinkled one of Dr. Head, 
of Chicago. We have a number of others in our cases undescribed 
as yet. Independent of the expense of illustration, the writer 
already pointed out a rule of Geological societies not to recognize 
any fossils, unless described in works solely devoted to ‘‘geol- 
ogy.’’ Mr. Schuler informed me that when the Botanical Sec- 
tion ascertained that some low forms of animal life were mixed 
up in the collection received from the relatives of my old friend 
and fellow-worker, the late Professor Wright, they handed them 
over to us. It is unnecessary to say they are exquisitely dis- 
played with the old skill which some of us may remember. 
