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A review of the literature indicated that most of the information of reproductive patterns in New World monkeys has been gained from studies on the squirrel monkey. This species has been successfully bred in both indoor and outdoor colonies. Both sexes exhibit seasonal cyclicity that appears to be influenced by a number of environmental conditions. Reports indicated that most of the other New World species have been bred in captivity, most commonly in zoos. The scientific data on these species are sparse, usually obtained from small groups or individual animals. more...

Alkyllead compounds in the gas and aerosol phase were determined simultaneously in urban and rural atmospheres using gas chromatography--atomic absorption spectroscopy and wet chemical (iodine monochloride) methods. The difference in results between the two methods suggests the presence of vapour-phase tri- (and/or di-)alkyllead in both urban and rural air. Concentrations of 0.06-1.6 and 16-205 ng Pb m-3 were found for vapour-phase organolead compounds other than tetraalkyllead in rural and kerbside urban air, respectively. Tetraalkyllead and trialkyllead compounds were identified in atmospheric aerosols at both sites, but these were found to be present at concentrations less than 1.2% of the total gas-phase alkyllead. more...

Adult male Saguinus mystax tamarins were evaluated for sperm parameters and testicular volumes. Sperm concentrations average 195.5 X 10(6)/cc with 41.7% motile sperm. Semen specimens were classified as normal, relative to sperm morphology, when 95% or more of the sperm in the specimen had normal morphology; 76% of the animals evaluated had normal semen specimens using this criterion. Testicular volumes averaged 726.9 mm3. A total of 50 infants were sired by 16 of these males during the period covered by this report. more...

A study of illness behaviour and sexually transmitted diseases (STDs) investigated the ways in which women with symptoms potentially attributable to STD reached a decision on whether or not treatment should be sought. It was found that non-treatment of genital symptoms is partially explained by women classifying symptoms as normal: 53% among those not seeking treatment did so, compared to 12% and 10% in the two treated groups. When people are uncertain about symptoms there is a motivation to seek treatment. Thus, nearly all women in this category thought treatment necessary. Even among women who do seek treatment, the majority do so only after a period of waiting. Only 45% and 43% in the two treated groups reported seeking treatment immediately. The biological and sociological background relevant to treatment decisions indicate that it will be difficult to achieve changes in these percentages. more...

The development of endoscopic techniques and instruments is traced from Bozzini's light transmitter in the early 1800's to the present. Early use of laparoscopes, cystoscopes, hysteroscopes and culdoscopes is described. While the site of use of these instruments differs, certain general aspects are similar. Modern instrumentation permits visualization into almost any body cavity. more...