LUWKU LIAS : TEWKEiSBUliY. 145 
one or more bands of limestone (Ostrea-beds) that yield many 
specimens of Ostrea liassica. 
The term "Insect Limestone" has however been -applied 
indiscriminately, to beds that have yielded remains of Insects, and 
some of the beds evidently belong to the Rhaetic series. 
Among the localities where these Insect Limestones have been 
noted by Mr. Broclie, and by W. R. Binfield, Strickland, and 
others, are Hasfield, Wainlode Cliff', Apperley (the Grey hill), 
Forthampton, and Strensham ; but the quarries are now mostly 
abandoned. 
As no good section ot the beds at Strensham is now exposed, it 
\\ill be best to record that given by Buckman, Strickland, and 
Brodie.* It was one of the quarries opened near the escarp- 
ment, about two miles from Deftbrd Station, and 4 or 5 miles 
north of Tewkesbury : 
FT. IN. 
f Soil arid clay - - - 4 
CHANCE RUB. White limestone - - 4 
Clay, with Ammonites planorbis 2 
DOUBLE NURF. Two bands of limestone 
with clay-parting. Saurian remains 6 
Bluish clay - ... 3 
KING'S NURF. Rough argillaceous limestone 
I with Ostrea liassica (Ostrea Bed) - 3 
Black clay - - .30 
Lower Lias - < Q UEEN ' S NURF. Rough argillaceous lime- 
* \ stone ... 3 
Blue clay . - 3 
Hard blue limestone with Modiola minima - 6 
PAVING STONE, 3 in. divided by clay 1 in. 
with O. liassica and M. minima - 4 
Black shale, with Fish-scales, Cidaris, and 
bivalves - 6 
BRICK BED. Square blocks of hard stone, 
used for walls - 5 
I Shale - .03 
[BOTTOM BED. INSECT LIMESTONE, gene- 
rally blue, and very hard fine-grained, 
fissile limestone - 6 
Rha3ticBeds-<! Blueshale _ -.13 
) Soft light blue limestone, with casts of Area, 
[_ Cardium, &c. - 4 
17 8 
The term Bottom Bed is applied to the lowest bed of economic 
value. 
When we compare this section with the beds of Wilmcote 
and other places north-east of Evesham, we cannot doubt that the 
Insect Limestones are on different horizons. Here at Strensham, 
and also at Coomb Hill and Wainlode, the Insect Limestone 
comes beneath the Ostrea-beds, and so far as can be judged from 
the succession of the strata, subject as they are to local modifi- 
* Murchison, Geol. Cheltenham, ucw ed. by J. Buckman and H. E. Strickland, 
p. 49 ; Brodie, History of Fossil Insects, p. 70. 
E 70859. K 
