310 
Anticoagulin in Ticks 
blood.” He gives no further particulars. Colonel W. B. Leishman 
informs us that he has observed the same phenomenon with regard to 
the fluid excreted by 0. moubata. He was led to suspect that the fluid 
might exert an anticoagulating effect because he observed that drops of 
blood, escaping from punctures made by moubata, failed to coagulate 
w'hen they mixed with the fluid discharged by the ticks upon the skin 
of the host. Nuttall (1908, pp. 83, 97, 102) has observed the excretion 
of a similar fluid by 0. coriaceus and Argas persicus. 
REFERENCES. 
Christophers, S. R. (1906). The Anatomy and Histology of Ticks. Sci. Mem. by 
Officers of the Med. and Sanit. Depts. of the Govt, of India, n.s. No. 23. 
55 pp., 6 pi. 
Grutzner, P. (1902). Ueber die Wirkung der Zecke auf thierisches Blut. Deutsche 
med. Wochenschr. Jahrg. 28, pp. 555—556. (See footnote to p. 305 for 
comment.) 
Mosso (1899). Pouvoir anticoagulant de VIxodes ricinus. La Presse Medicate (14), 
14 Jan. (Soc. etranghres), p. 20. Review in Rec. d. med. vete'r. ser. 8, vi. p. 181. 
Nuttall, G. H. F. (1899). On the role of insects, arachnids and myriapods, as 
carriers in the spread of bacterial and parasitic diseases of man and animals. 
A critical and historical study. Johns Hopkins Hosp. Reports, vm. 154 pp. 
3 plates. Published also in part in Hyg. Rundschau , 1899, Bd. ix. See 
especially pp. 402—408. 
Nuttall, G. H. F. (vii. 1908). The Ixodoidea or Ticks (Harben Lecture I). Journ. 
Roy. Inst. Public Health, xvi. pp. 385—403, 8 figs, {re effects of tick-bite see 
pp. 395—397). 
Nuttall, G. H. F., Warburton, C., Cooper, W. F. and Robinson, L. E. (1908). 
Ticks. A Monograph of the Ixodoidea, Part I. (See Section II. pp. 81—104 
dealing with the general biology of the Argasidae, the effects of their bites, 
their relation to the spread of disease.) 
Sabbatani, L. (1898). Fermento anticoagulante dell’ Ixodes ricinus. Giorn. d. r . 
Accad. di med. di Torino , 4 S. IV. 380—395. Also translated (same title) in 
Arch. ital. de biol. Turin, 1899, xxxi. 37—53 (translation referred to in text). 
