124 Notes and Comments. 
(Williamsonia) gigas L. & H., Psilophyllum (W.) pecten (Phill.), 
Teniopteris vittata Brongn., T. major L. & H., T. sp., Wie- 
landiella nilssoni (Phill.) formerly known as Anomozamites 
nilssoni, Otozamites feistmanteli Zigno, O. graphicus (Leck. ex 
Bean MS.), Dictyozamites hawell1 Sew., a Cycadean stem 
classified as Wielandiella sp., Nilssonia mediana (Leck, ex 
Bean MS.), N. orientalis Heer, a new species of Pseudoctents 
(a genus recently founded on specimens of Cycadean fronds 
from the Upper Jurassic of Sutherland), Ginkgo digitata 
Brongn.), Baieria longifolia (Pomel), Czehanowskia murrayana 
(L. & H.), Elatides setosa (Phill.), and Taxites zamioides 
(Leck. ex Bean MS.). 
DERIVED CEPHALOPODA OF THE HOLDERNESS DRIFT 
At the same meeting, Mr. C. Thompson read a paper in 
which he stated that although it has been known for a century 
that the Drift of Holderness is rich in derived fossils, for many 
years the collecting of them had been neglected. However, 
in recent years, collections of the cephalopoda have been made 
and it is now claimed that about a hundred and eighty species 
of ammonites are known from the glacial drift. There are 
two important points about these specimens ; one, that large 
numbers are new to Yorkshire lists hitherto published; the 
other, that the matrix of many of them cannot be matched 
now by our land exposures. 
FROM THE NORTH SEA BED. 
The whole of the Lower Lias is so well represented by all its 
genera, and the rocky matrices are so characteristic, that it 
was urged that the ice plucked them from outcrops in the bed 
of a former North Sea; also that these outcrops show the 
continuity of the North Yorkshire Basin with that of North- 
Western Germany. The list appended to the paper showed 
that many gaps are now filled. The Middle and the Upper 
Lias afford much material, but the types are closer to those of 
North Yorkshire. The Oolites are very scantily represented, 
although the Lower Cretaceous is abundantly represented both 
by ammonites and belemnites. Again, there is a great differ- 
ence between the state of preservation of a collection made from 
the Drift, and that of one which can be made now from the 
Speeton Clay im situ. Hence, the existence of a wide spread of 
these clays to the east isconfirmed. Thechalk belemnites belong 
to a zone higher than any known in Yorkshire; therefore, 
they probably came from the sea-bed. 
MANCHESTER MICROSCOPISTS. 
The Manchester Microscopical Society is well known for 
the unusually good work it accomplishes in the way of giving 
popular lectures on microscopical and natural history subjects. 
It also produces a valuable record of the work of its members 
Naturalist, 
