SYNOPSIS OF CONTENTS. 



PAGE 



Introduction. — Vagueness of the general title " Post-Tertiary " . . .1 



Terms " Northern Drift," " Brick Clay," " Till/' " Boulder Clay " . 2 



§ I. Varieties of Boulder Clay : 



I. Oldest Unfossiliferous Boulder Clay . . . - .3 

 II. True Fossiliferous Boulder Clays . . . . .4 



Fossiliferous Boulder Clay of Caithness . . . .4 



1. Wick Harbour . . . . . .6 



2. Burn of Haster . . . . . .7 



III. Stony Clay, of the same age as the Clyde Shell Clay, improperly termed 



Boulder Clay ; Lag, Isle of Arran . . . .7 



IV. Sands, Gravels, and Clays, containing Boulders, but not analogous to the 



Oldest Unfossiliferous Boulder Clay . . . .8 



1. Chappel Hall, Airdrie . . . . . ' 9 



2. Lag, Arran . , . . . .10 



§ II. Varieties of Fossiliferous Deposits not being Boulder Clays and not Post- 

 glacial : 



Necessity for subdivision . . . . .11 



The distinction between Glacial Deposits and Raised Beaches, alone, not 



sufficient . . . . . . .11 



I. Fossiliferous Beds immediately beneath the Boulder Clay, and either Pre- 

 glacial, Interglacial, or Glacial, without having any Boulder Clay for their 



base . . . . . . . .13 



1. Crag " of Aberdeenshire . . . . .13 



2. Kilmaurs Bed, with E. primigenius and C. tarandus . . 14 



Ostracoda from Kilmaurs . . . .16 



3. Tangy Glen, near Campbeltown . . . .16 



Ostracoda from Tangy Glen . . . .17 



4. King Edward, Aberdeenshire : Section of beds : Ostracoda . 18 



II. Fossiliferous Beds intercalated between masses of Boulder Clay . . 19 



1. Crofthead, near Glasgow ; 'svith Bos jjriniiffenius . . .20 



Freshwater Ostracoda . . . .21 



2. Oakshaw Hill, Paisley . . . . .21 



