VITREOSIL 



(Pure Fused Quartz or Silica) 



The properties and applications 

 of VITREOSIL are now very 

 generally known. It is appre- 

 ciated because, being a pure 

 chemical compound, its be- 

 haviour is essentially reliable. 



Small pieces of almost perfect optical homogeneity 



are now available. We welcome enquiries from 



those interested. 



THE THERMAL SYNDICATE Ltd. 



ViTREosiL Works, Wallsend-on-Tyne. 

 London Depot : Thermal House, Old Pye Street, S.W. i . 



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Some recent and forthcoming contributions 

 My View of Reincarnation .... Clifford bax 



Monads of Leibniz 



Confucius and the Modern State 



Freedom 



Philosophy and Life 



Alchemy in Morocco 



The Virgin Birth 



The Leisured World 



The Novel : Its Influence in Propaganda . gerald gould 



Rise of Nationalism in Europe and the Way Out julien benda 



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