PLATE 7.— Crystals. 



Figure 



1 . «, brucia ; 6, sulphocyanide of brueia. 



2. Cinchonine. 



3. Sulphocyanide of cinchonine. 



4. Narcotine. 



5. «, by Strychnine. 



6. Sulphocyanide of strychnine. 



7. Morphia. 



8. Sulphocyanide of quinine. 



9. Muriate of ammonia. 



10. Purpurate of ammonia (murexide). 



> Nitrate of potash (analytic crystals). 



13. Benzoic acid. «, crystallized from water ; 6, sublimed. 



14. Lithofellinic acid. 



15. Margarine. 



16. a, Margaric acid ; 5, stearic acid. 



17. lodo-disulphate of quinine. 



18. Hippuric acid. 



19. Lactate of lime. 



20. Lactate of zinc. 



21. Succinic acid crystallized from water. 



22. Creatine. 



23. Creatinine. 



24. Compound of creatinine and chloride of zinc. 



