— 91 The following table gives the number of fleas per rat per month and also shews the average maximum and minimum temperatures with the average relative humidity for the month. All the rat fleas caught were of the Xenopsylla Cheopis species :— Fleas, per Hat.

Average Temperature (Shade.) Average Month.

Maximum °F. j Minimum °F.

relative Humidity.

January ') Record. 83.1 70.5 70 February [ Xncom-81.7 68.6 61 March ) plete. 82.8 68.0 62 April 1.1 90.0 72.0 53 May 1.7 98.6 | 68.0 44 June 1.4 302.7 79.0 33 July 0.3 106.0 81.0 41 August . . 0.3 1 14.6 84.0 43 September No. Fleas. 100.0 81.0 53 October . . * 9 94.5 68.0 65 November 9 9 87.6 74.5 70 December 9 9 85.5 70.5 67 <B) Suakin.

Ships entering-pilgrim ships 9? «9 -non- *9 Sambuks entering-pilgrim 9 9 9 t 9 9 21 16 1 218 -non-