THE MIDDLE LIAS OF NORTHAMPTONSHIRE 
291 
193. Ag. squarrosus, Mull. On trunks of trees. Sept.-Oct. 
Ay. floccosus , Edgbaston, With., 262. Studley Castle, 
Purt., ii., 615; Allesley Bree in, Purt., iii., 416. Hams 
Hall, Hatches! Combe Fields, Adams. Sutton ; The 
Grange, Erdington; near Penns railway station; 
Kenilworth ; Trickley Coppice ; Lady Wood, Four Oaks; 
etc. 
194. Ag. spectabilis, Fr. On dead stumps. Oct. Ac/, aureus, 
at Oversley, Wixford, and near Broome Court, Purt., 
iii., 195. Warwick, Perceval. Kenilworth, Russell, 
Rlustr. By the side of Brinklow Lane, Adams. Coles- 
liill Pool; Edgbaston Park ; pine wood, Coleshill 
Heath ; Shustoke. Ay. rheoides, on hawthorn and alder 
stumps, Edgbaston Park, and Lane to Curdworth, With., 
210, seems to be this species. 
195. Ag. adiposus, Fr. On trunks of trees. Oct. Stump, 
Malt House Lane, Kenilworth, Russell, Rlustr. Hops- 
ford, Adams. Driffold Lane, Sutton. 
196. Ag. mutabilis, Scheeff. On stumps. Local. Aug.-Oct. 
Edgbaston, on rotten wood, With., 279. Hopsford, 
Adams. Driffold Lane ; Sutton Park ; Langley ; New 
Oscott; New Park; Trickley Coppice; pine wood, 
Coleshill Heath ; Alveston Pastures. 
197. Ag. marginatus, Batsch. Woods. Rare. Oct. In the 
Park at Packington, With., 283. The Spring, Kenil¬ 
worth, Russell. Rlustr. Pine wood, Coleshill Heath ; 
Wyndley Pool, Sutton. 
(To be continued.) 
THE MIDDLE LIAS OF NORTHAMPTONSHIRE. 
BY BEEBY THOMPSON, F.C.S., F.G.S. 
(Continued from page 265.) 
Ayncultural drainage does not cause floods, neither does it 
materially diminish the supply of water to porous beds, according 
to some authorities. The question is very difficult to deal 
with, because very strong and quite opposite opinions are held 
on the subject. So far as I can judge, farmers, as a class, hold 
the opinion that under-draining does not help to cause floods, 
but rather to diminish them, whereas engineers generally hold 
the opposite opinion. The line of argument taken by the 
former seems to be about this:—The more thoroughly a soil 
is under-drained, the more nearly does it resemble a dry 
sponge in absorbing water, and the less likely is any to flow 
