ILLUSTRATIONS 



FIG. 



1. Pediculus humanus var. corpons . . Frontispiece 



2. Photograph of the Back of a Soldier showing the 



Bronze Mottling often caused by Louse-bites . 8 



3. Diagrammatic Section through an Adult Female 



Louse . . . . . .13 



4. Pediculus humanus laying an Egg on Hair . . 21 



5. Egg of Body-Louse attached to Fibres of Cloth 22 



6. Egg of Crab-Louse on Pubic Hair . . .22 



7. The Larva of Pediculus humanus emerging from the 



Egg . 24 



8. Cast Skin of Body-Louse . . . .26 



9. Fragment of Sewing-cotton fouled by Louse Excreta 31 



10. The "Stammers" or Serbian Barrel . . .54 



11. Improvised Disinfestor . . .56 



12. The Crab-Louse (Phthirus pubis) . 76 



13. Claw of Third Leg of Crab -Louse grasping Pubic 



Hair ...... 77 



CHARTS 



I. Illustrating the Migration of Lice from an Afebrile 



Man (P.H.) to an Afebrile Bedfellow (S.H.) . 95 



II. Illustrating the Migration of Lice from a Febrile 



Man (P.H.) to an Afebrile Bedfellow (S.H.) . 96 



III. Illustrating the Effect of Fever on the Migration of 



Lice ...... 98 



IV. Curves of the Incidence of Typhus and Relapsing 

 Fever in the Second Roumanian Army, showing 

 the Association between two Louse-borne Diseases 107 



