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Contents 
PAGE 
Practical section: Regarding the methods of louse destruction hv means 
of heat applied to clothing and effects, together with an illustrated 
description of the apparatus employed ...... 435 
(1) Dry heat.435 
(2) Moist heat ........... 454 
Number of articles with which a disinfector should he charged, working 
capacity, etc. ........... 474 
Effects of disinfection on clothing, etc........ 478 
Recording the temperature of disinfectors . . . . . .481 
Faulty methods and common sources of failure ..... 482 
2. Pediculicides and remedies for lice.484 
General considerations: 
The mode of action of pediculicides ....... 484 
Choice of insecticides and mode of application ..... 485 
Effects of greasy substances and oil ...... 486 
“Repellants” ........... 488 
Critical considerations and further experiments . . . .491 
Conclusions regarding repellants ....... 493 
Sub-section I. Experiments with Pediculicides and reputed remedies 494 
A. Experiments with corporis (nits and lice) . . 494 
Experiments wherein corporis were immersed in insecticides . . . 494 
,, „ ,, ,, brought in contact with insecticides . 496 
(a) Experiments in vitro and in boxes ...... 496 
( b ) „ on clothing and straw ...... 498 
(c) ,, on man ......... 498 
(1) Under conditions supposedly simulating the natural . . . 4°8 
(2) Under more natural conditions of experimental infestation . 499 
(3) Upon naturally infested men ....... 499 
(4) With impregnated clothing . . . . ^ . . . 500 
Experiments wherein corporis were exposed to various vapours and gases 501 
(a) Experiments in vitro or in boxes ....... 501 
(b) ,, with insects on clothing or man .... 506 
(1) On verminous clothing ........ 506 
(2) On man.506 
(a) Under conditions supposedly simulating the natural . . 506 
( b) Experiments on verminous men ...... 508 
Experiments upon the relative efficiency of various insecticides (Bacot) . 509 
B. Experiments with Phthirus pubis ..... 514 
Sub-section II. Pediculicides and remedies recommended in practice 516 
IV. Plan of disinfestation establishments and modes of procedure . . 559 
V. General summary and practical recommendations.573 
VI. Supplementary notes.578 
Additions to bibliography.582 
