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I recommend the route from Talgarth via The Gader, by Pencerrig 

 Calch to Llanthony, Lougtovni, Eowlstone, to the Station at PontrUas, 

 for the study of any Geologist who loves the physical grouping of 

 rocks, and the lore communicated by a hill-top and a mountain stream. 

 If this investigation of geological wonders does not make him a lover 

 of the physical revelations of our science, nothing else will ! 



" A primrose by the water's brim, 

 A yellow primrose is to him, 

 And f will be nothing more.'' 



To those who can appreciate such history I wish all success, and 

 part with one word of warning. Do not be induced to overwork 

 either your legs or your brains. Fifteen miles a day of hill -side 

 walking, with the necessary geological investigation, is enough for 

 the heartiest and the healthiest. Lastly, don't sit up poring over 

 your notes and sections when you ought to be in bed and asleep. 



