PREFACE 



The aim has been to eliminate from this book all those topics that 

 are of minor importance to the student and practitioner of Pharmacy. 

 As a pharmacist and teacher, the writer feels that the botanical prepa- 

 ration for Pharmocognosy and Materia Medica, in those colleges where 

 Botany is given for one year, should include mainly the structural and 

 systematic aspects of the science. In the Medico-Chirurgical College, 

 of Philadelphia, Botany is taught the first year, extending over a period 

 of 155 hours. The author has introduced in this concise volume the 

 important subject matter of his lectures given to first year students, 

 and has omitted laboratory directions for the obvious reason that fixed 

 subjects for laboratory study are unnecessary. It is not a book on 

 Pharmacognosy, however, since it does not describe how one drug 

 differs from another of the same group in all of its detaUs. 



The work is included in two parts. Part I is largely devoted to the 

 morphology (gross and minute) and, to a less extent, the physiology of 

 the Angiosperms. Part II deals with the taxonomy of plants, mainly 

 but not wholly of medicinal value, together with the parts used and the 

 names of the official and non-official drugs obtained from these. 



The author does not claim sole originality for the facts presented, 

 but has consulted many sources of information, mention of which will 

 be found in the bibliography of the text. 



Acknowledgment is here made to his esteemed friends. Dr. Francis 

 E. Stewart of the Medico-Chirurgical College and Dr. John M. 

 Macfarlane of the Univ. of Penna., for valuable assistance in the 

 reading of the proofs and preparation of the index. 



H. W. Y. 

 Philadelphia. 



