x CONTENTS. 



PAGE 



Measurements of the Corpuscles of the Chyle, of the Lymph, and of the 



Thymus Fluid . . . ... . .-.... . 244 



Measurements of the Glohules of Pus . ib. 



CHAPTER II. 

 On the Structure of the Lymphatic Glands . . . . . 245 



CHAPTER III. 

 On the Situation and Structure of the Thymus Gland . . 255 



CHAPTER IV. 

 On the Situation and Structure of the Spleen .... 264 



CHAPTER V, 



Containing an Account of the Manner in which the Red Particles of the 

 Blood are formed, deduced from the Experiments and Observations 

 related in the preceding chapters ..... 274 



DETACHED PAPERS. 



A Letter from the late Mr. William Hewson, F.R.S., and Teacher of Ana- 

 tomy in London, to Dr. John Haygarth, Physician in Chester . 287 



The Operation of the Paracentesis Thoracis, proposed for Air in the Chest, 

 with some Remarks on the Emphysema, and on Wounds of the 

 Lungs in general . . . . . . .291 



Description of the Plates ....... 303 



