LA FABRICACION DE AZUCAR BLANCO EN LOS 

 INGENIOS. 



By W. H. TH. HARLOFF and H. SCHMIDT. 

 Translated into Spanish by C. J. BOURBAKIS. 

 (Reviewed by CLKVK. W. HINKS. M. S.. Station Sv/n-rint, 



This book is edited by two of the foremost sugar producers 

 of the world, Mr. Harloff, who is manager of a large sugar 

 factory in Java, and Mr. Schmidt, a very able consulting chemist 

 and engineer. 



The book was originally written in Dutch and was translated 

 into English,. and now the Spanish edition has been completed, 

 which will be welcomed by Spanish readers throughout the sugar 

 world. 



While dealing with a purely technical subject, this work is so 

 simple in its diction that it may be readily comprehended even 

 by those of little technical training. 



The introduction is divided into five parts as follows: 



Part I. The influence of alkalies and alkaline earths on the 

 constituents of cane juice. 



Mention is here made of the formation of saccharates of 

 barium, strontium, and calcium in low concentrations. The 

 latter is made use of in the famous Steffens process of the beet- 

 sugar industry. 



Part II. The influence of acids on the constituents of sugar 

 cane and the hydrolizing effect of dilute acids on sucrose and the 

 resulting constituents, laevulose and dextrose or invert sugar, 

 are explained. 



Part III. The influence of heating on the constituents of cane 

 juice is shown. 



Part IV. The coloring substances of cane and those produced 

 in the process of manufacture. 



Part V. The different fermentations that occur in the sugar 

 factory including lactic, butyric, alcoholic and dextran are dis- 

 cussed. 



The main part of the text deals with the manufacture of 

 white sugar by the carbonitation and sulphitation processes, 

 and particular attention is given to the acid-thin-juice-method 

 which has been elaborated in the Java factories with such great 

 success during the past few years. 



This book may be obtained from Norman Roger, 2 St. Dun- 

 stan's Hill, London, England. Price 7s. 6d. net (=P4 Philippine 

 currency) . 

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