30 BRITISH AVONIAN CONODONT FAUNAS 
limestones, including the Hosie Limestones, and inter-bedded shales, with sub- 
ordinate ironstone nodules and coals. Alternating sandstones, shales, fireclays, and 
workable coals and ironstones mark the Limestone Coal Group, while the Upper 
Limestone Group consists predominantly of sandstone, with subordinate shales, 
limestones and coals. 
I. Dunbar. Samples were collected from limestone bands within the Lower 
Limestone Group near Catcraig (NT 715772). The beds collected were the Long 
Craig Upper (NT 749752), Skateraw Lower (NT 748752), Skateraw Middle (NT 
743754), Skateraw Upper (NT 738758), Chapel Point (NT 722774), Barness East 
(NT 724773) and the Dryburn Foot (NT 732763) Limestones. 
II. Midlothian. The Lower Limestone Group was collected from various points 
in the Midlothian Coalfield. The ‘‘ Gilmerton ’’ Limestone was collected 14 miles 
S.S.E. of Carlops (NT 172544) where it consists of grey crystalline limestone and 
shales, with a limestone breccia at the top. The North Greens Limestone was 
collected in Bilston Burn (NT 270649) and in the banks of the River North Esk, 
250 yds. S.W. of Newhall House. It consists of about 35 ft. of impure, thinly- 
bedded, argillaceous limestone. 
The Vexhim Limestones were collected in Glencorse Burn, 350 yds. upstream from 
Milston Bridge (NT 250628). 
The overlying Bilston Burn Limestone was collected in Bilston Burn, where it 
consists of about 40 ft. of thinly-bedded limestone, with an overlying bed of cal- 
careous shale and a 5 ft. bed of dolomitic limestone. 
Ill. Fife. A thick succession of the Calciferous Sandstone Measures and the 
Lower Limestone Group is exposed (Figs 85, 86) near Pittenweem (NO 548027) on 
the shore of the Firth of Forth, between Anstruther and Coal Farm. Samples 
were collected from the limestone and shale beds, the limestones yielding abundant 
conodonts, whereas the Calciferous Sandstone Measures, apart from three beds 
(15, 43, 388), were barren. ; 
IV. Ayrshire. Sections through the Lower Limestone Group and the Upper 
Limestone Group were collected. 
The Broadstone Limestone was collected at Auchenmade (NS 342486) where it is 
overlain by the Dockra Limestone, which was also collected here. The Hosie Lime- 
stones were collected in a railway cutting at Glengarnock (NS 333525). 
In the Upper Limestone Group the Index Limestone was collected near Glonbeith 
Castle (NS 332458) and near Drumbuie House (NS 361506) where it was about six 
feet thick. 
The Lower and Upper Linn Limestones were collected at the Linn Spout near 
Dalry (NS 287487, NS 284485). 
V. Roxburghshire. The Main Algal ‘ Series ’ of Garwood (1931) was collected in 
Harden Burn (NY 517907) and the limestone bands, apart from the algal bed, 
yielded abundant conodonts. 
VI. Argyll. The Carboniferous Limestone ‘Series’ at Machrihanish (McCallien 
1928 ; McCallien & Anderson 1930) was examined and the limestones were collected 
where they were exposed on the beach (NR 632208). 
ae 85 Lect 
