J. F. SHIRLAW                                         309

                                   ACKNOWLEDGMENT

The microphotographs and colour drawings illustrating this article have
been prepared by Ahmed Baksh, Assistant Artist of this Institute, to whom
thanks are due.

                                          REFERENCES

Bridges, R. F. and Scott, W. M. (1931). J. Roy. Army M. Corps. 56, 241-249.
Clive Webb, E. (1906). J. Comp. Path. Ther. 19, 1.
Datta, S. C. A. and Munro, D. A. (1935). Proc. 22nd Ind. Sc. Cong. Calcutta, p. 408.
Manifold, J. A. (1928). J. Roy. Army. M. Corps. 51, 402.
Patton, W. S. (1910). Bull. Soc. Path. Exot. p. 274.
Symons, T. H. (1926-27). Ind. J. Med. Res. 14, 293.