president’s address. 
43 
abundant. The following were also obtained :— Belemnites, 
Pecten dentatus, Pecten liasinus, Lima punctata ?, Rhynchonella 
tetrahedra , var. Northamptonensis. 
The Ilock - bed around Bugbrook is so little below 
the surface that it can be seen in several of the ditches ; 
this is the case in a lane just to the east of Bugbrook, 
and again in the lane to the west of the church. At 
this latter spot the bank is rather high, and the Marl- 
stone is capped by several feet of Upper Lias clay, in 
which one of the Cepliaiopoda-beds may be seen. On the 
south side of the railway and canal, near to the 66tli mile¬ 
stone of the railway, there is a small quarry, or perhaps, 
having regard to its present condition, I should say a pond, 
where the Bock-bed may still be found; the upper portion 
of the bank is in the Communis-beds of the Upper Lias. 
In the village, a heap of stones yielded, amongst a number 
of common Bock-bed fossils, Ammonites acutus, Eucyclus 
concinnus , and Actaonina Iiminst even sis, from which I inferred 
that the Transition-bed was developed in the neighbourhood, 
although I had not been fortunate enough to discover it. 
Bothersthorpe now yields nothing, every quarry has 
been grassed over, but I may mention that a large proportion 
of the Middle and Upper Lias fossils that were collected by 
Miss Baker—sister to the Northamptonshire historian— 
were collected here. They are now distributed in various 
museums over the country, many being in the Natural 
History Museum at South Kensington. 
BIBMINGHAM NATUBAL HISTOBY AND MICRO¬ 
SCOPICAL SOCIETY. 
PRESIDENT’S ADDRESS. 
BY T. A. WALLER, B.A., B.SC. 
( Continued from page 17 .) 
In the same region occurs the rock which has furnished 
the material for what will, I think, prove another investigation 
of primary importance for the coming geology, viz., that of 
Mr. J. J. H. Teall into the changes, chemical and mineralo- 
gical, which have been effected in a dyke traversing the gneiss 
