Lewontin is undoubtedly one of the most distinguished evolutionary biologists of our time. He has contributed to science not only by his own work on evolutionary theory and molecular variation and by his influence on the many young scientists who have worked with him, but also by asking us to think about the relationships between the science we do and the world we do it in. This collection of essays is produced in honor of Lewontin's 65th birthday. This unique volume offers comprehensive coverage of modern evolutionary genetics from molecules to morphology by a group of star authors,...

None of the clay minerals was found to be dominating in either silt or clay fractions. Both the fractions showed the presence of mixture of minerals namely mica, smectite, kaolinite and vermiculite. The presence of smectite and vermiculite amidst ubiquitous presence of mica indicates that mica might have weathered to give rise to smectite and vermiculite. In view of incipient development of soils in the Aravali sediments and also the similar kind of minerals throughout the profiles was suggested that the minerals present were not formed during the post deposition period of the soil formation....