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ILLUSTRATIONS 



Main building, Bureau of Science Frontispiece 



Facing page — 



Plate I 14 ' •«»< ak ? 



Fig. 1. Bureau of Science cement laboratory in 1906. XHW \\}\e% 



2. Bureau of Science cement laboratory in 1913. BOTANICAL 



Plate II 16 OaHDEN. 



Pneumonic plague. 



Fig. 1. Lung of guinea pig which died of advanced plague 

 infection, after being exposed to air in which 

 plague bacilli were suspended by means of spray- 

 ing. 



2. Lung of monkey which died of pneumonic-plague 



infection from inhalation, showing progression of 

 lesions; lobular and lobar pneumonia. 



3. Lung of dog with pneumonic plague. 



Plate III 18 



Fig. 1. Vibrio of Asiatic cholera. 



2. Bacillus tuberculosis. 



3. An atypical strain of Bacillus dysenteriee. 



Plate IV 18 



Fig. 1. Pure culture of leprosy F from glycerine agar. 



2. Amoeba with cholera vibrio and leprosy bacillus G. Sec- 



ond transplant from primary culture. 



3. Smear from early lesion in guinea pig following a 



subcutaneous injection of a pure culture of leprosy 

 bacillus F. 



4. Culture G. Leprosy bacilli with amoeb£e and cholera 



vibrios. Stained with carbol-fuchsin and decolorized 

 with Gabbet's stain. 



Plate V 20 



Unusual case of amoebic dysentery. 



1. Early ulcer with necrotic cap. 



2. Ulcer with necrotic tissue removed. 



3. Confluent ulcer. 



Plate VI 20 



Typical examples of amoebae and entamcebae, drawn from fixed 

 and stained preparations at the magnification of Zeiss ^12 oil- 

 immersion objective, ocular 3, and tube length of 160 milli- 

 meters, and with the aid of a camera lucida. 



Fig. 1. Motile form of a typical Amoeba, cultivated from the 

 Manila water supply. 



2. Encysted form of the same species of Amoeba. 



3. Motile form of Entamoeba coli, from the stool of a 



healthy person. 



3 



