584 



Index 



Leprosy, etiological factors in, 4 



Leprosy bacillus, 75, 411 



Leucocidin, and its neutralisation, 359 



Leucocytes. See also Phagocytes 



Leucocytes (amoeboid cells) in resorption, 

 47, 73, 175, 514, 515 ; adaptation of, to 

 virulent bacteria, an education, 281; 

 various categories of, 74-79 ; soluble fer- 

 ments of, 95 ; chemiotaxis of, 119, 177 ; 

 theory of bactericidal secretions by, 187- 

 191, 533-537, 539, 540, 542 ; action of 

 leucocidin on, 359 ; absorption of poisons 

 by, 393-400; situations where there are 

 no pre-existing, 551 



Lily of the valley, acquired immunity in, 

 513, 515 



Liver, serum against cytotoxin acting on, 

 116 ; protective function of the, 427 ; 

 of Mollusca an organ of second diges- 

 tion, 59 



Lizard, resistance of, to tetanus toxin, 

 332 



Lugol's solution in immunisation, 347 



Lupus, slow growth of, 406 



Lymphocytes. See also Leucocytes, Phago- 

 cytes 



Lymphocytes, 76, 78 



Lymphpid organs. See also Haemato- 

 poietic organs, Phagocytic organs 



Lymphoid organs, protective function of 

 the, 428 ; as source of sensibilising sub- 

 stance (fixative), 537 



Lymphomacrophages, 76 



Macrocytase (alexin, complement), 86, 98, 

 105, 112, 196, 549; analogy of, with 

 actinodiastase, 86 ; escape of, during pha- 

 golysis, 95, 99, 102, 552 ; presence of, in 

 spermotoxin, 101 ; origin of, 103 ; active 

 for resorption of animal cells, 196, 197, 

 296; in extracellular solution of red 

 corpuscles, 552 



Macrophages, 76, 77, 79, 547; the part 

 they play in resorption, 80-100, 176; 

 staining reactions of, 77; in phagocytosis, 

 144, 148, 154, 157, 161, 162, 164, 173, 

 184, 228, 245, 321, 548 ; act more especi- 

 ally in resorption of animal cells, 176, 

 196, 548 ; but intervene specially against 

 human tubercle bacillus in pigeon, 148 ; 

 against spirilla, 162, 177, 228; and against 

 streptococci, 245 ; not source of bacteri- 

 cidal substance in body fluids, 187 ; part 

 played by, in arsenic poisoning, 397 ; the 

 principal source of antitoxin, 401; of 

 skin, reaction of, against micro-organ- 

 isms, 407 



Macrophagic organs, digestive property of, 

 85, 150 



Malaria, immunity against, 129, 278 ; pro- 

 tective action of serum in, 278; im- 

 munity acquired after, 434 



Manures, influence on plant diseases, 36 



Marmot, immunity of hibernating, against 

 tetanus, 339 



Martin's broth (bouillon de panse), 473 



Massowah vibrio, acquired immunity 

 against, 221; action of specific serum 

 on, 305 



Mastzellen, 77 



Membranes, protective secretion of, by 

 bacteria, 21, 242 



Meriones shawii, 22, 183 



Mesenteric glands, 62, 85, 98, 195 



Mesoderm, function of amoeboid cells of, 

 518 



MicrobicidaL See Bactericidal 



Micrococcus prodigiosus, 42, 45 ; antagon- 

 istic to anthrax bacillus, 323 ; action of 

 vaginal mucus on, 430 



Microcytase digests bacteria, 196, 197, 296, 

 550 ; in immunity, 218 ; escape of, during 

 phagolysis, 218, 222, 230, 295, 554; 

 transforms vibrios into granules, 552 ; 

 action of, on Vibrio metchnikovi, 553 



Micro-organisms, minuteness of certain 

 pathogenic, 3 ; variability in action of, 

 5 ; staining reactions of, 13, 83, 181, 

 183, 198, 213 ; immunity by attenuated, 

 2, 509; pathogenic, in healthy persons, 

 7 ; adaptation of, to toxic substances, 

 21, 25 ; protective secretion of mem- 

 branes by, 21, 242; defence in plants 

 against, 35 ; defences of animals against, 

 545 ; elimination of, from the body, 43, 

 46 (see also Elimination) ; resorption 

 of, 46, 175, 546; antidiastase against 

 enzymes of, 109 ; natural immunity 

 against pathogenic, 128-174, 175-206; 

 acquired immunity against pathogenic, 

 207-249, 250-299, 300-324; anaerobic, 

 immunity against, 169, 170 ; pathogenic 

 animal, 2, 173, 247-249, 277-279, 316 ; 

 destruction of, an act of resorption, 

 175, 206 (see Bacteriolysis) ; presence of, 

 in white corpuscles, 514 ; adaptation of 

 phagocytes to destroy, 558, 566 ; mode 

 of entry into phagocytes, 177 ; digested 

 by phagocytes, 181, 514-525, 536, 539- 

 543 (see Phagocytes, Phagocytosis) ; trans- 

 formation into spherical granules, 198 

 (see also Pfeiffer's phenomenon) ; extra- 

 cellular destruction of, 165, 212, 533- 

 537, 542; modified growth in serums from 

 immunised animals, 256, 259 (see also 

 Agglutination) ; specific diagnosis of, by 

 modified growth, 256, 259; agglutination 

 does not prevent growth of, 262 ; changes 

 which they undergo in immunised animal, 

 289 ; attenuation of, 208, 286-289, 508 ; 

 adjuvant and retarding functions of, 

 170, 426; antagonism between anthrax 

 and certain, 323; antagonism between 

 cholera vibrio and certain, 324; acido- 

 phile, 418; exfoliation of epidermis to 

 get rid of, 406; localisation and arrest 



