Order and chaos in fluid flows
p. 0629 | Narasimha, R.

Science News
p. 0645

A new spectrophotometric reagent for determination of sulphur dioxide and formaldehyde
p. 0646 | Chattopadhyay, S. P.; Das, Arabinda K.

Occurrence of xenacanthid freshwater shark teeth in the mudstone litho-facies of Nilkanth, Pauri, Garhwal Himalaya
p. 0649 | Shringarpure, D. M.; Shah, A. N.

Seasonal changes in dehydrogenase activity in cultivated, pond and virgin soils
p. 0651 | Singh, B. N.; Ram, H.

Current Science--50 years ago
p. 0655

Effect of chronic smoking on lipoproteins
p. 0658 | Padmini, E.; Motlag, D. B.

Redlichiid trilobites from the Tal Formation, Lesser Himalaya, India
p. 0659 | Kumar, Gopendra; Joshi, Ashutosh; Mathur, V. K.

Rate of infiltration--An in situ measurement
p. 0663 | Avudainayagam, S.; Sharma, K. K.; Rajamani, V.; Reddi, B. Rukmangada

Determination of water soluble phosphorus in fertilizer materials
p. 0664 | Gill, M. P. S.; Dhillon, N. S.; Dev, G.

Geographical distribution of the genus Piper Linn, in India
p. 0666 | Rahiman, B. A.

Myonecrosis in Swiss albino mice following xylotox administration. Changes in alkaline and acid phosphatases
p. 0668 | Katoch, S. S.; Vaidya, H. V.

Production of cellulases from Curvularia lunata
p. 0669 | Annapurna, J.; Bhalerao, U. T.

Occurrence of ursolic acid and related compounds in Eucalyptus hybrid leaves
p. 0670 | Dayal, Rameshwar

New record of a baculovirus disease in Leucinodes orbonalis Guen
p. 0671 | Tewari, G. C.; Singh, S. J.

Propagation of Zephyranthes through tissue culture
p. 0672 | Philomena, P. A.; Gunaseeli, B. Prema; David, B. V.

A new leaf spot of Curcuma longa in Sikkim
p. 0673 | Srivastava, L. S.; Verma, R. N.

Formation of infection structure in Colleiotrichum capsici as influenced by nitrogen sources and cellophane
p. 0674 | Muruganandam, V.; Suryanarayanan, T. S.; Venkatachalam, S. R.

Effect of morphactins IT 3233 and IT 3456 on pollen germination and tube growth in Asclepias curassavica L.
p. 0675 | Rao, Mamatha

Effect of antibiotics on the growth of Hypnea valentiae (Turn. ) Mont. (Gigartinales, Rhodophyta)
p. 0676 | Rengasamy, R.; Prema, M.; Govindarajan, S.; Ilanchelian, K.

New rusts from Mannanur forest, Andhra Pradesh, India
p. 0677 | Rao, K. Niranjan

New rusts from Mannanur forest, Andhra Pradesh, India
p. 0677 | Rao, K. Niranjan

Methyl isocyanate and fern gametophyte
p. 0679 | Singh, I. P.; Roy, S. K.

Nectar dilution pattern of bees in semi-arid environments
p. 0681 | Abrol, D. P.; Kapil, R. P.

Book Reviews
p. 0682

News
p. 0684

Science News
p. 0685

News
p. 0686

Announcements
p. 0687

Erratum
p. 0687