210 



REPORTS ON THE STATE OF SCIENCE. — ^191S. 



Soil and subsoil varies from 6 inches to 6^ feet (thickness).' 



Feet 



— (1) Cherty sandstone with carbonaceous fragments . . — 

 N — (2) Cherty sandstone with lenticles of chert . . . — 

 M — (3) Chert with thin bands of sandstone .... — 



L — (4) Chert with sandy layers 1 



K — (5) Bedded cherty sandstone — 



1 — (6) Sandy chert, lenticular — 



H — (7) Bedded cherty sandstone, dark-coloured . . . — 



G— (8) Chert . . — 



F— (9) Sandy chert — 



E— (10) Chert 1 



D— (11) Cherty sandstone, dark-coloured — 



C— (12) Clayey shale — 



B— (13) Chert — 



A.' — (14) Dark cherty sandstone with carbonaceous markings . — 



A"— (15) Chert 1 



(16) Grey clay — 



(17) White plastic clay, greenish tint and rusty spots, bedding 



obscure, but more distinct near bottom ... 2 — 



(18) Clay or clayey shale not so light in colour as that above 2 — 



Trench No. 2. — Lower trench in upper field (second field) north of 

 Easaiche Bridse. 



Inches 

 5 



Surface 



Yellow clay, ? in place . 



Solid bed of chert, 2-3 feet 



Feet 

 . 3 

 . 2 

 . 3 



Inches 



Feet Inches 

 Chert blocks, fractured and 



confused . . . . ? — 

 Light-coloured clay . . ? — 



Dips of 60° to 60° to the north-east were indicated. 

 Trench No. 3. — Section in trench in upper field (second field), north 

 of Easaiche Bridge, 70 feet north-east of road, and 180 feet north-west 

 of the ditch separating the lower from the upper field. Thickness 



Feet Liches 

 Surface material 4 — 



(1) Greenish-yellow clay 1 — 



(2) Bed ochrey clay — 4 



(3) Sandy chert and cherty sandstone in beds 1" to 2" and 



in small pieces ........ 1 — 



(4) Greyish shale with pale and yellow bands ... 3 — 



(5) Yellowish clayey shale with grey bedding lines . . 2 — 



(6) Yellow plastic clay, ochrey at base, bedding obscure . 1 — 



(7) Banded dark-grey and yellow clayey shale, micaceous . 2 — 



(8) Hard, dark-brown, well-bedded sandstone with carbon- 



aceous films on bedding planes, and with blebs of 

 black chert often ^ inch in size . 



(9) Chert, lenticular, with plant remains 



(10) Dark cherty sandstone ... 



(11) Dark carbonaceous shale, micaceous 



(12) Chert with plant remains and dark che; 



(13) Cherty sandstone, much broken . 



(14) Chert with plant remains 



(15) Chert, much broken, sandy . 



(16) Solid, massive bed of chert with brecciated internal 



structure ....... 



Loose blocks of chert not in sitti at greater depth 



Dips 50° to 55° to the east-north-east. 



' The capital letters A to in the section of Trench No. 1 have been used 

 by Dr. Kidston and Professor Lang to indicate the various sub-zones of the 

 chert, in tlieir joint paper ' On Old Eed Sandstone Plants showing Structure 

 from the Ehynie Chert Bed, Aberdeenshire,' communicated to the Eoyal Society 

 of Edinburgh on July 3, 1916. 



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