160 Notes and Comments. 
AND ITS AMMONITES. 
An examination of the list of species of ammonites recorded 
by Fox-Strangways from the Oxford Clay of Yorkshire shows 
that the Oxford Clay of Yorkshire itself is not in the main 
sequential to the Kellaways Rock, but is contemporaneous 
with it, leading to the inference that even in Yorkshire itself 
part of the Kellaways Rock is only a local manifestation, and that 
it passes laterally into Oxford Clay. <A table of zones is given 
in order to illustrate the contemporaneity of the Kellaways 
Rock-Oxford Clay deposits of Yorkshire and the Midlands, 
while at the same time showing the various non-sequences in 
both areas. Some critical paleontological remarks are made 
concerning the identification of certain species of ammonities, 
and there is a correction of nomenclature, with a new name 
for a species misidentified on account of homoceomorphy. 
This leads to a few remarks on development and homceomorphy, 
wherein an important difference in the mode of development 
of certain Kellaways Rock-Oxford Clay genera is pointed out, 
and it is remarked that there are three methods of homceo- 
morphy—(1) subparallel, the likeness of stocks passing through 
similar stages; (2) tranversal, the likeness of stocks starting 
from different forms meeting at a cross-over or collision-point ; 
and (3) cyclical, the likeness of an anagenetic to a catagenetic 
series. 
THE NAME ‘ KELLAWAYS.’ 
For some reason which Mr. Buckman doubtless considers 
sufficient he retains the name‘ Kellaways’ for the rock south of 
Yorkshire, but for the Scarborough representative of the de- 
posit he gives Leckenby’s spelling ‘ Kelloway.’ The bed derives 
its name from Kellaways in Wiltshire, and while Yorkshiremen, 
and particularly Yorkshire geologists, are often peculiar people, 
we see no reason why they should be permitted to alter 
the name of a deposit merely because it occurs on their 
classic ground. If this method is continued, we presume 
the other Yorkshire deposits will be having their names 
similarly altered. For example, the Oxford clay, so called 
from its great development in Oxford, will be altered, and the 
nearest word we can think of is the Oxo clay—which we 
beg to suggest! Mr. Buckman does not appear to have 
referred to the remarkably fossiliferous section at South Cave, 
in South Yorkshire, where ammonites are particularly plentiful. 
oo i Ce 
At a recent meeting of the Leeds Geological Society, a roll-top desk, 
attaché case and illuminated address were presented to Mr. E. Hawkesworth 
in recognition of his services as secretary to the Leeds Society; and 
Mrs. Hawkesworth was the recipient of a pearl, amethyst, and emerald 
pendant. 
Naturalist, 
