LIST OF ILL USTRA TIONS. 



II. FIGURES IN TEXT. 



FIG. PAQK 



1. Crystals of phenylglucosazone ...... 8 



2. phenylmaltosazone . . . . . .11 



3. Lactose crystals (Frey) . . . . . . .12 



4. Crystals of phenyllactosazone . . . . . .13 



5. Inosite crystals (Frey) . . . . . . .17 



6. Cholesterin crystals (Frey) ....... 23 



7. Leucine crystals (Kiihne) ....... 28 



8. Tyrosine crystals (Frey) ... ... 28 



9. Crystals of egg albumin ....... 44 



10. Proteid crystals from human urine (Bramwell and Noel Paton) . . 45 



11. Crystallised vitellin of the oat kernel (sborne) . . . .53 



12. Charcot's crystals ........ 94 



13. Creatine crystals (Kiiline) . . . . . . .100 



14. Creatinine crystals (Kiihne) ....... 100 



15. Creatine-zinc chloride crystals (Kiihne) ..... 101 



16. Spherical compound of mercury and creatine (G. S. Johnson) . . 102 



17. Compounds of xanthine and hypoxanthine, by means of which these sub- 



stances may be isolated and identified (Kiihne) . . . .103 



18. Zinc sarcolactate (Kiihne) . . . . . . .107 



19. Calcium sarcolactate (Kiihne) ...... 107 



20. Absorption spectra of retinal pigments (Kiihne) .... 123 



21. Oliver's apparatus for estimating the number of blood corpuscles . .149 



22. hacmoglobinometer . . . . . . .151 



23. The hsematinometer . . . . . . . .211 



24. The haematoscope . . . . . . . .211 



25. Graphic representation of the spectrum of oxyhaemoglobin and hemo- 



globin (Eollett) . . . . . . . .212 



26. Double slit employed in Vierordt's method of spectrophotometry . 216 



27. Glass troughs for containing the liquids to be examined by the methods 



of spectrophotometry (Kriiss) . . . . . .217 



28. Trough mounted on stand, as used in spectrophotometry (Kriiss) . .217 



29. Section of glass trough (Kriiss) ..... 217 



30. Spectrophotometer with absorption trough and lamp . . .218 



31. Hiifner's spectrophotometer . . . . . . .221 



32. Schematic representation of the path followed by the rays of light before 



entering the slit of the collimator of Hiifner's spectrophotometer 

 (Kriiss) ......... 222 



33. The photographic spectrum of haemoglobin and oxy haemoglobin . .227 



34. Graphic representation of the spectra of oxyhieinoglobliii and haemoglobin 



(Rollett) . . . . : '-'" 233 



35. The photographic spectrum of oxyhsemoglobin and of CO-haemoglobm . 240 



36. ,, ,, ,, oxyhaernoglobiii and methsemoglobin . 247 



37. ,, hsemin ..... 254 



38. ,, ,, ,, oxygenised hiumochromogen and of hamio- 

 chromogen ........ 256 



39. The photographic spectrum of haematoporphyrin .... 259 



40. Diagram to show the dilution of the blood produced in dogs by the 



injection of dextrose (Leathes) ...... 294 



41. Diagram to show the influence of the intravenous injection of dextrose 



on the blood pressure in the abdominal viscera . . . 294 



42. Diagram to show the effect of injecting dextrose after a previous 



bleeding ......... 295 



