ARTICLES 97 



of Mousterian age — this is no place to speak ; but we may 

 permit ourselves to speculate as to whether the cold period 

 which produced the " sludge " was the same one that gave 

 rise to the Coombe Rock and buried the Mousterian industry 

 of Baker's Hole, or a later one. And if the latter, whether 

 Mousterian man migrated south during the Coombe Rock 

 period, and returned, with pottery, later ; for there is no sign 

 at Ipswich of any cold spell during or immediately succeeding 

 the Mousterian occupation. 



In spite of all the labour and thought bestowed upon it, the 

 question of how many cold episodes have occurred in south- 

 east England is still far from being solved ; but it is a curious 

 fact, and one possibly connected with the climatic problem, 

 that the frequency of occurrence of the various palaeolithic 

 industries in this country is practically in inverse proportion 

 to their age. 



