London.Geroge Allen & Unwin Ltd. 1917. [6], 7-144pp. 32 colour and black & white plates tipped in; many line drawings throughout the text. Original blue buckram gilt. Original pictorial dust-wrapper. Quarto. First edition thus. Lower board edges a trifle rubbed; some foxing to fore-edges; front free endpaper slightly browned; wrapper is a trifle chipped at corners with less than a cm loss at head of spine; a handsome copy in a very good, clean wrapper.Very scarce in wrapper.