Volume 53, Issue 3
March 1961, pages 111-156
pp 111-124 March 1961
In the outer Himalaya, during the Cenozoic Era, the quiescent phases, between the orogenic impulses, are marked by three successive periods of sedimentation. The principal sedimentary facies are: (1) ‘Black shale facies’ (Subathu) of the Eocene period followed by (2) ‘flysch facies’ (Lower Murree-Dagshai) during the lower part of Lower Miocene Epoch, and finally replaced by (3) ‘Molasse facies’ (Siwaliks) during the Middle Miocene to Pliocene. This succession of facies points to a natural consanguineous association of a group of sediments and such sedimentary cycles have been observed in geosynclinal areas in other parts of the world.
The disposition of the Tertiary basins of sedimentation is between the craton (Peninsular mass) to the south and rising mountains in the Ortho-geosynclinal belt (Extra-Peninsula) to the north, the latter being the source of sediments. The sediments thicken towards the Himalayas and become thin towards the craton. Thus, the flysch and molasse filled geosyncline along the outer Himalaya corresponds to an ‘exogeosyncline’ (Kay, 1951).
pp 125-134 March 1961
pp 135-139 March 1961
pp 140-142 March 1961
If the body temperature of dogs is reduced to 25–27°C., it is possible to give all the oxygen required by the animal by the intravenous route so that they need not breathe oxygen from outside.
pp 143-148 March 1961
Effects of age, sex and female gonadal hormone on brain respiration in rats are studied. Oxygen consumption of the entire brain of rat rises as the weight of animal increases. It is maximum when the body weight reaches about 150 gm. Then there is a decrease in oxygen consumption. Female sex hormone seems to have an inhibitory action on the brain respiration.
pp 149-156 March 1961
Dibenzothiophene (DBT) when given to rats is eliminated through urine as 1-hydroxydibenzothiophene-5: 5-dioxide and an unidentified sulphonic acid. DBT is thus metabolised in a manner similar to 1:2:5:6-dibenzanthracene. Since, the sulphur atom in the thiosters, like the ‘K-region’ in 1:2:5:6-dibenzanthracene, is implicated in an oxidative process, the ‘K-region’ is not immobilized as regards carcinogenicity in the thiosters. The present work explains the carcinogenic activity of the key thiosters observed by earlier workers.