PHAEMACOLOGY OF THALLIUM 
21 
Thallium is among the most toxic substances recommended for rat 
control; comparative tests with other rat poisons by the same feed- 
ing method give the following minimum lethal doses : 
Mg. per kgm. 
of body weight 
Thallium 25 
Strychnine - 20-25 
Arsenious oxide 100 
Red-squill powder 250 
Barium carbonate 750 
Thallium is a cumulative poison of high toxicity and is without 
taste, smell, or other warning property. It should not be recom- 
mended to the public as a rodent poison. Where the use of thallium 
is found necessary for the control of highly resistant species of 
rodents, it should be entrusted only to persons who understand its 
dangerous qualities and who will exercise appropriate care in han- 
dling it. 
BIBLIOGRAPHY 
(1) Anonymous. 
1927. treatment of ringworm with thallium acetate. jour. amcr. 
Med. Assoc. 89 : 2217. 
(2) 
1929. TREATMENT OF RINGWORM OF THE SCALP BY THALLIUM. Brit. Mcd. 
Jour. (1929) 1: 214. 
(3) 
1929. MEDICINE AND THE LAW. OVERDOSE OF THALLIUM ACETATE: AN ERROR 
IN CALCULATION. Laucct 216 : 795. 
(4) Althoff. 
1928. SIEBEN FALLE von THALLIUM-VEBGIFTUNG IN EINEB FAMILIE. Deut. 
Ztschr. Gesell. Gerichtl. Med. 11: 478-481. 
(5) Bayer Co. 
1925. methods for the control of rats and other rodents in the 
UNITED STATES. [Mimeographed.] 
(6) Bedford, G. V. 
1928. DEPILATTON WITH THALLIUM ACETATE IN THE TREATMENT OF RING- 
WORM OF THE SCALP IN CHILDREN. Canad. Med. Assoc. Jour. 19: 
660-662, illus. 
(7) Belehradek, J., Huxley, J. S., and Curtis, F, R. 
1928. note on THE RELATION BETWEEN (A) EXTERNAL HYDROGEN ION CON- 
CENTRATION AND (B) THALLIUM SALTS, AND THE RATE OF AM- 
PHIBIAN METAMORPHOSIS. Biochcm. Jour. 22: [63]-66. 
(8) Bettmann. 
1901. ubeb expebimentellen haarausfall durch thallium aceticum. 
Dermatol. Centbl. 5 : 2-6. 
(9) Blake, J. 
1890. DES rapports ENTRE LES spectres DES £l6mENT8 ET LEURS ACTIONS 
biologiques. Compt. Rend. Soc. Biol. [Paris] (9) 2: [55]-58. 
(10) Blyth, a. W., and Blyth, M. W. 
1920. POISONS : their effect and detection. Ed. 5, thoroughly rev., 
enl., and rewritten, 747 p., illus. London. 
(11) Brieger. 
1927. thallium-strychninvergiftung. Deut. Ztschr. Gesell. Gerichtl. 
Med. 10: [634] -637, illus. 
(12) BULLARD, W. N. 
1902. A CASE of poisoning by thallium. Boston Med. and Surg, Jour, 
97: 58^591. [Also published in Med. Surg. Rpts. Boston City 
Hosp. 13: 73-78.] 
(13) Buschke, A. 
1900. expebimenteller beitbag zub kenntniss deb alopecie. Berlin. 
Klin. Wchnschr. 37: [1235]-1236. 
(14) 
1911. WEITEBE BEOBACHTUNGEN iiBEB DIE PHYSIOLOQISCHEN WIBKUNGEN 
DES THALLIUM. Deut. Med. Wchnschr. 37: 161-163. 
