M 59
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307. Throat swabs:- One thousand six hundred and twelve throat swabs were cultured for C. diphtheriae. The number of positives is only slightly greater than recorded last year.
THROAT SWABS EXAMINED FOR DIPHTHERIA.
European Indian Chinese Total Positive 79 277 356 430 Negative 509 со 818 1,256 Grand total 1,095 со 1,612Table XXXIX.
308. Cerebro-spinal fluid:- One thousand two hundred and eight fluids were examined for the presence of the meningococcus and other pathogenic organisms. While a proportion of these represent repeated examinations, the enormous increase over the previous year's figures is noteworthy.
CEREBRO-SPINAL FLUID EXAMINED FOR MENINGOCOCCI AND OTHER ORGANISMS.
European Indian Chinese Total Meningococcus 5 3 36 36 Pneumococcus 3 3 Negative 332 832 840 1,200 Grand total Co 1,208Table XL.
309. Rat spleen smears. Two hundred and fifty-two rat spleens were smeared and stained for P. pestis. No positive findings are recorded.
(5) Clinical Pathological Procedures.
310. Friedmann test for pregnancy. Thirty-three Friedmann tests were performed during the year. The test is evidently becoming a familiar and valuable instrument in the physician's diagnostic armamentarium. In 1937 we recorded only five tests.
311. Urine examinations.- Five hundred and one routine chemical and microscopic examinations of urine were carried out.
312. Miscellaneous tests. Three hundred and five tests of a miscellaneous nature were made.