PREFACE. 



THIS work the author has intended, not only as a guide to those 

 attending a general course of lectures on Chemistry, but especially 

 for the use of pharmaceutical and medical students, whose wants it 

 is believed it will fully supply, especially when supplemented by the 

 practical manipulations in physiological chemistry at the laboratories 

 of medical schools wherein micro-chemical and spectroscopic opera- 

 tions are fully taught, and in colleges of pharmacy where are exemplified 

 to the student the practical chemical manipulations pertaining to the 

 manufacture of officinal preparations. 



The material has been divided into seven parts. In the first the 

 fundamental properties of matter are briefly and so far considered as 

 their knowledge is absolutely necessary for an understanding of 

 chemical phenomena. 



The second part treats of those principles of chemistry which are 

 the foundation of our science, and enters briefly into a discussion of our 

 theoretical views regarding the atomic constitution of matter. Though 

 the author prefers to present these theories to his classes at the proper 

 times during the course of lectures, he did not deem it desirable to have 

 them scattered throughout the work, choosing rather to present them 

 compactly in such a form that the student may be able to study them, 

 after having acquired some knowledge of chemical phenomena. 



The third and fourth parts are devoted to the consideration of the 

 non-metallic and metallic elements and their compounds. The old 

 classification of metals and non-metals, organic and inorganic com- 



