THE papers collected in this book have been published in the Medical 

 Examiner, of Philadelphia, from August, 1852, to August, 1853. They 

 form only a part of the author's original researches in Physiology and 

 Pathology. A second will soon be published, containing the results of 

 the author's experiments and clinical observations on some important 

 points of the physiology and pathology of the different nervous centres, 

 on fractures of the spine, on the vital properties of the iris and of the 

 cellular tissue, on the properties and functions of the blood, on the signs 

 of death, on electro-physiology, on the laws of cadaveric rigidity and- 

 putrefaction, and on the etiology and treatment of some of the nervous 

 diseases. 



