The Stomach . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 Examination of the Gastric Contents . . . . . . . . . . . . . . 213 Obtaining the Contents . . . . . . . . . . . . . . . . . . . 214 Physical Examination . . . . . . . . . . . . . . . . . . . . 217 Chemic Examination . . . . . . . . . . . . . . . . . . . . . 218 Microscopic Examination . . . . . . . . . . . . . . . . . . . 228 The Gastric Contents in Disease . . . . . . . . . . . . . . . 230 Additional Examinations Which Give Information as to the Condition of the Stomach . . . . . . . . . . . . . . . . . 233 CHAPTER V The Feces . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235 Macroscopic Examination . . . . . . . . . . . . . . . . . . . . 236 Chemic Examination . . . . . . . . . . . . . . . . . . . . . . 238 Microscopic Examination . . . . . . . . . . . . . . . . . . . . 239 CHAPTER VI Animal Parasites . . . . . . . . . . . . . . . . . . . . . . . . 244 Protozoa . . . . . . . . . . . . . . . . . . . . . . . . . . . 244 Vermes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247 Arthropoda . . . . . . . . . . . . . . . . . . . . . . . . . . 259 CHAPTER VII Miscellaneous Examinations . . . . . . . . . . . . . . . . . . . 261 Pus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261 Peritoneal, Pleural, and Pericardial Fluids . . . . . . . . . . 265 Cerebrospinal Fluid . . . . . . . . . . . . . . . . . . . . . . 268 Animal Inoculation . . . . . . . . . . . . . . . . . . . . . . 269 The Mouth . . . . . . . . . . . . . . . . . . . . . . . . . . . 270 The Eye . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274 The Ear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276 Parasitic Diseases of the Skin . . . . . . . . . . . . . . . . 277 Milk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277 Syphilitic Material . . . . . . . . . . . . . . . . . . . . . . 281 Semen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283 APPENDIX Apparatus and Reagents . . . . . . . . . . . . . . . . . . . . . 286 Apparatus . . . . . . . . . . . . . . . . . . . . . . . . . . . 286 Reagents and Stains . . . . . . . . . . . . . . . . . . . . . . 288 Weights, Measures, etc., with Equivalents . . . . . . . . . . . . 292 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 293 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295 {17} A MANUAL OF CLINICAL DIAGNOSIS INTRODUCTION USE OF THE MICROSCOPE There is probably no laboratory instrument whose usefulness depends so much upon proper manipulation as the microscope, and none is so frequently misused by beginners. Some suggestions as to its proper use are, therefore, given at this place. It is presumed that the reader is already familiar with its general construction (Fig. 1).