VI 



This copying without examination (book manufacturing) is 

 especially dangerous in analytical chemistry, and more so if the 

 results must stand test before a court of justice, which in examina- 

 tions of this kind is frequently required. 



The position of an expert who has employed acknowledged 

 inaccurate methods for his examination, is certainly not an envia- 

 ble one. 



The author of this small volume has therefore collected therein, 

 for the first time, those methods which are acknowledged as being 

 the best for scientific and practical purposes. 



They excel the methods known before 1877. 



1st. For their greater accuracy. 



2d. For greater simplicity. 



3d. For cheapness and economy of time. 



The views expressed in this book no doubt may be modified in 

 time, and undersigned will, therefore, at all times, be pleased to 

 receive suggestions from others. 



De. NICHOLAS GEEBEE, 



Manager of the Ametican Swiss Milk Preduct Co. {Limited), 



New York City. 



Little Falls, N. Y., January, 1883. 



