Contents

IN THIS ISSUE

315	In this issue

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EDITORIAL

317	Earth science, earthquakes and aftershocks
	P. Balaram

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CORRESPONDENCE

319	The chip is what IT is about!
	D. N. Bose
320	Painful lesson from interaction with the media
	C. P. Rajendran
321	Recognition of contribution of a person should be one-time affair
	Bharati Mittal
321	Bt-cotton in India
	C. R. Bhatia; Response: Geeta Bharathan
323	Bt-cotton: Government procedures
	P. K. Ghosh; Response: Geeta Bharathan
325	Bt-cotton: The view from MAHYCO
	R. B. Barwale; Response: Geeta Bharathan

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MEETING REPORTS

327	Recent trends in crystallography
	S. P. Sen Gupta and Monika Mukherjee
329	Organic synthesis in drug discovery and development
	Harish Padh

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RESEARCH NEWS

330	Mechanism of peptide bond formation on ribosomes
	D. P. Burma

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OPINION

331	Indian popular science books need popular appeal
	Dilip M. Salwi

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332	From the archives

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SCIENTIFIC CORRESPONDENCE

333	Differential activation of ribulose-1,5-bisphosphate carboxylase/oxygenase in non-radio labelled versus radiolabelled sodium bicarbonate
	Narinder Kumar and Sanjay Kumar
335	Late embryo mortality -- A prime cause of seed  sterility in some exotic pine species adapted in Kumaon Himalaya
	Kanak Sahai
337	A pink coloured Pleurotus djamor (Rumph.) Boedijn from natural habitat of north Bihar, India
	Malay Srivastava
338	The Rann of Kuchchh earthquake, 26 January 2001
	Vinod K. Gaur

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GENERAL ARTICLES

341	Health hazards of mosquito repellents and safe alternatives
	V. P. Sharma
343	Facilitating innovation in Indian small and medium enterprises -- The role of clusters
	V. P. Kharbanda

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REVIEW ARTICLE

349	Apoptosis: Molecular machinery
	S. Aejaz Syeed, H. Vohra, A. Gupta and N. K. Ganguly

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RESEARCH ARTICLES

361	Cepheid distance estimation for Virgo cluster
	Anwesh Mazumdar and D. Narasimha
369	Defining a space-based disaster management system  for floods: A case study for damage assessment due  to 1998 Brahmaputra floods
	K. V. Venkatachary, K. Bandyopadhyay, V. Bhanumurthy,  G. S. Rao, S. Sudhakar, D. K. Pal, R. K. Das, Utpal Sarma,  B. Manikiam, H. C. Meena Rani and S. K. Srivastava

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SPECIAL SECTION: KALAKAD--MUNDANTHURAI TIGER RESERVE

378	The Kalakad--Mundanthurai Tiger Reserve: A global  heritage of biological diversity
	A. J. T. Johnsingh
389	Changes in forest composition and structure in three  sites of tropical evergreen forest around Senglatheri, Western Ghats
	N. Parthasarathy
394	Dispersal modes of tree species in the wet forests of  southern Western Ghats
	T. Ganesh and Priya Davidar
400	Response of wet forest butterflies to selective logging  in Kalakad--Mundanthurai Tiger Reserve: Implications  for conservation
	M. Soubadra Devy and Priya Davidar
406	Structure and composition of rainforest floor  amphibian communities in Kalakad--Mundanthurai  Tiger Reserve
	Karthikeyan Vasudevan, Ajith Kumar and Ravi Chellam
413	Distribution of forest floor reptiles in the rainforest of Kalakad--Mundanthurai Tiger Reserve, South India
	N. M. Ishwar, Ravi Chellam and Ajith Kumar
419	Vocal communication and territoriality during the non-breeding season in migrant warbler
	Madhusudan Katti
424	Abundance and habitat selection of the Malabar spiny dormouse in the rainforests of the southern Western  Ghats, India
	Divya Mudappa, Ajith Kumar and Ravi Chellam
428	Impact of biotic disturbances on Nilgiri langur habitat, demography and group dynamics
	S. F. Wesley Sunderraj and A. J. T. Johnsingh
437	Involving local people in biodiversity conservation in  the Kalakad--Mundanthurai Tiger Reserve -- An  overview
	V. K. Melkani
442	Beyond 2000: A management vision for the Kalakad-- Mundanthurai Tiger Reserve
	Sugato Dutt
448	Human use areas in the Kalakad--Mundanthurai Tiger Reserve
	Rauf Ali and Anupama Pai

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RESEARCH COMMUNICATIONS

453	Fe--Ti-enriched mafic rocks from south Andaman  ophiolite suite: Implication of late stage liquid  immiscibility
	Anant Shastry, Rajesh K. Srivastava, R. Chandra and  George A. Jenner
455	Dynamics of 17a,20b-dihydroxy-4-pregnen-3-one and 17a,20b,21-trihydroxy-4-pregnen-3-one in plasma and  oocyte incubation media of cat fish (Clarias batrachus)  in response to salmon gonadotropin
	R. Moses Inbaraj, S. Haider and S. S. R. Baqri
459	Partial characterization and identification of a virus associated with stunt disease of black pepper (Piper  nigrum) in South India
	Y. R. Sarma, G. Kiranmai, P. Sreenivasulu, M. Anandaraj,  M. Hema, M. Venkatraman, A. K. Murthy and  D. V. R. Reddy

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BOOK REVIEWS

463	Database of Medicinal Plants
	reviewed by R. C. Srimal
463	Biomedical Information Technology
	reviewed by Jayashree Balaji

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