Chemical Systematics of Family Gentianaceae
p. 0109 | Daniel, M.; Sabnis, S. D.

The pursuit of Science: Its Motivations
p. 0161 | Chandrasekhar, S.

Discovery of mixed coccoliths from mud volcanoes of Baratang Island, Andamans, India
p. 0170 | Jafar, Syed A.

News
p. 0173

Observations on the nature of damage to rice earheads by Thrips, Haplothrips Ganglbaueri Schmutz
p. 0173 | Vidyasagar, P. S. P. V.; Kulshreshtha, J. P.

Studies on physiological adjustment of the heartbeat frequency in vitro and in vivo and acetylcholine levels in acclimatized Periplaneta americana (L. )
p. 0174 | Jamil, Kaiser

News
p. 0178

Rice root nematode (Hirschmanniella spp. ) A review of the work done in India
p. 0179 | Edward, J. C.; Sharma, N. N.; Agnihothrudu, V.

News
p. 0182

Current Science-50 years ago
p. 0183

In vitro propagation of oil palm (Elaeis guineensis Jacq var tenera) through somatic embryogenesis in leaf-derived callus
p. 0184 | Thomas, V.; Rao, P. S.

Interaction of platelets and plasma proteins with HEMA grafted polyurethanes
p. 0185 | Nair, Ajantha K.; Sharma, Chandra P.

Record of late permian ammonoid Cyclolobus from Zoji-La, Kargil district, Jammu and Kashmir
p. 0187 | Razdan, M. L.; Dhir, N. K.; Kacker, A. K.

Preliminary observations on the oxidation of phloretyglycine by silver carbonate on celite
p. 0189 | Bai, R. Padma; Narasimhan, K. L.; Anandam, Bhickoo V.; Joseph, K. Thomas

On the spirochaete bacteria infesting the crystalline style of Bivalvia (Phylum: Mollusca)
p. 0191 | Hameed, P. Shahul; Paulpandian, A. L.

Response of cyanobacterial nitrogenase expression to exogenous NO3- and NH4+
p. 0193 | Khan, Zahed U. M.; Chandrasekharan, P. A.; Venkataraman, G. S.

Incidence of fungal infection on the developing eggs of Cyprinus carpio var. communis and use of polythene shreds as egg attachment device
p. 0195 | Padmakumar, K. G.; Jayaprakash, V.; Mathew, A. V.; Kunju, U. Mohammed

Occurrence of yellow mosaic virus on Siratro (Macroptilium atropupureum) fodder crop
p. 0196 | Lakshmanan, P.; Balakrishnan, V. K.; Manoharan, T.

A new toxin responsible for the early symptom in Fusarium wilt disease of cotton
p. 0196 | Sankaranarayanan, Vasanthi; Kumar, S. Umesh

Fertile pinnules of Marattiopsis Schimper from the Sivaganga beds of Ramanathapuram district, Tamil Nadu
p. 0197 | Jeyasingh, D. E. P.; Sudherson, C.

A new disease of coconut kernel
p. 0199 | Sharma, R. B.; Roy, A. N.; Sharma, M. P.

Effect of medullary extract of the thiamine deficient chicken on the activity level of acetylcholine esterase in the broad compartments of the brain of the normal chicken
p. 0200 | Nalini, U. P.; Nayeemunnisa

Laboratory evaluation of leaf extract of a new plant to suppress the population of malaria vector Anopheles stephensi Liston (Diptera: Culicidae)
p. 0201 | Saxena, S. C.; Sumithra, L.

Book Reviews
p. 0203

News 
p. 0205

Announcements
p. 0213