r Some steam distillates collected from leaves of ten Rutofeous plants by Simple Steam Distillation method have been investigated for antimicrobid and insecticidal activity. Muwaya paniculata, Toddalia asiatica. Lirnonia acidissima and Glycosmis p entaphylla have shown significant anti fungal activity against Cladosporium cladosponoides. High antibacterial activity was displayed by L. acidissima and M. paniculata against Staphylococcus aureus. Atalantia monoph,vUa and Acrorychia pedunculata caused significant mortality of the aphid.A@is cracchora

101 Plant extracts from 55 plants were screened for antibacterial activity against StaphyLococcus aureus, Esclzericltia coli, and M,ycobacteritrnr fortuittrm. Hortonia an.gustifolia (root) showed very high activity against Mycobacteriunt fortuituna ; Artentisia dubia (leaf), Celtis ciitizantomea (stem), Curcuni,~ Longn (tuber), Lobelia aronaatica (leaf), Ocimunz gratissinz.ccnt (aerial part), Pinz,enta officinalis (stem bark), Thespesiapopc~lizea(stem), Ule.z:ectropaeus (whole plant) showed significant activity against a t least one of the above organisms.

Phyllosphere epiphytic microorganisms of 15 Sri Lankan rice varieties were determined and 81 different recognizable taxonomic units of microbes were isolated. Three bacterial and 18 fungal isolates inhibited the growth of Magnaporthe grisea and Rizoctonia solani in vitro. Copyright © 2006 John Wiley & Sons, Ltd

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The differential tuberculin test has been carried out on a group of leprosy patients using 5 different PPD antigens (S, Y, G, B and F) obtained from Mycobacterium tuberculosis and other myco bacterial species. The patterns of sensitization seen in the leprosy patients were found to be different from those of the general po pulation and of tuberculous patients, but no marked differences in the patterns were seen between the patients with leprom atous and those with tuberculoid leprosy.In both groups of patients, there was with all the antigens except PPD-F, a clear-cut group of non-reactors and a group of reactors. Both tuberculoid and lepromatous leprosy patients had, in contrast to tuberculous patients, a significant proportion of non-reactors. It was also found that the patterns of sensitization to antigens obtained from mycobacteria other than Myco. /eprae were not different in the two immunological extremes of leprous disease.