In a study of ninety strains isolated in 1944, Reyn, Komer, and Bentzon (1958) found that the minimum inhibitory concentration (MIC) of penicillin ranged from 0-0038 to 0-024 i.u./ml. This high degree of gonococcal susceptibility in almost 100 per cent. of strains continued to be reported for the next 10 years by other workers (Lankford, 1945; Romansky and Robin, 1947; Schummer and Hubbes, 1951...

We report the isolation, characterization and analysis of the small subunit rRNA genes in Plasmodium cynomolgi (Ceylon). As in other Plasmodium species, these genes are present in low copy number, are unlinked and form two types that are distinct in sequence and are expressed stage specifically. The asexually expressed (type A) genes are present in four copies in the Ceylon- and in five copies ...

;Primary' pulmonary hypertension, which is rare in western countries, was found to be relatively common in Ceylon. The clinical and haemodynamic features were studied. There were two distinct types of the disease, malignant and benign. Patients with the malignant form of the disease had a rapidly progressive illness of short duration and an invariably fatal outcome. Those with the benign form g...

The European records of the origin of spectacles are very controversial. The suggestion that spectacles were first invented during the I 3th century in Italy by an unknown layman of Pisa is not convincing, because there are also references to spectacles in Hindu literature at about the same time. In the life of Vyasaraya (1446-1539), written in Sanskrit by his contemporary, the poet Somnath, th...