M 85
AGGLUTINATION TESTS.
ORGANISMS EUROPEAN INDIAN CHINESE Total Pos. Neg. Pos. Neg. Pos. Neg. Pos. Neg. B. Typhosus ... ... ... ... ... ... ... ... B. Para. A ... ... ... ... ... ... ... ... B. Para. B 47 118 10 1 164 1 221 120 B. Para. C 4 ... ... ... ... ... 4 ... B. Dysenteriae ... ... ... ... 1 ... 1 ... B. Meletensis ... ... ... ... ... ... ... ... B. Abortus 5 16 ... ... ... ... 5 16 Weil Felix } 186 381 753 21 1,518 2,276 ... 1 566 753 21 4 563 753 21 i ... 1 3 4 4 ... 3 ... ... ... ... ... ... ... ... Grand Total 50 454 5 58 191 1,518 2,276 ...Malaria. During the year the following Medical Officers were assisted in the examination of blood films, the Medical Officer of Health, the Medical Officer of Schools and the Medical Officers in Charge of Victoria and Lai Chi Kok Gaols; also the Government Malarialogist was assisted in a special survey at Repulse Bay. Both thin film and Ross's thick film methods were employed.
EXAMINATION OF BLOOD FILMS FOR MALARIA.
PARASITES EUROPEAN INDIAN CHINESE TOTAL Malignant Tertian 2 ... 28 31 Benign Tertian 14 2 50 66 Quartan ... 1 1 2 Unclassified 1 ... 17 22 Negative 51 13 237 301 Grand Total 69 20 332 421