Kemp neatly calls, the "fantasia", expressed by the painting of the Last Supper in which the perspectival illusion is interestingly explained. In the scientific field, similarly inspired ingenuity is found in Leonardo's geometrical transformations. The physiological truth so beautifully symbolized in the Leda and the Swan and the portrait of a Lady on a Balcony (the Mona Lisa) is here interpret...

Health education is an innate aspect of public health practice and difficult to discuss as a separate entity. Nevertheless, this special issue of Preventing Chronic Disease provides in-depth examinations of the purposes and uses of health education programs. We thank Neil Hann of the Oklahoma State Department of Health and Carol Russell of the Directors of Health Promotion and Education for ser...

A technical consideration of play, with special reference to its mental hygiene aspects. Obviously a labor of love, written in good style by a most enthusiastic person. The reviewer was disappointed to find in it little of clinical value from the point of view of psychiatry and mental hygiene. In it he did find the usual mixture of sentimentality and poorly digested psychoanalytic terminology. ...

Two new species of Onciderini are described and illustrated: Oncideres tavakiliani, from Brazil (Pará), and Clavidesmus egeri, from Peru. Oncideres defectiofasciata Gilmour, 1950 is a junior synonym of O. chevrolatii Thomson, 1868. The following four new country records are reported: O. crassicornis Bates, 1865 (Paraguay); O. glebulenta Martins, 1981 (Paraguay); O. gutturator (Fabricius, 1775) ...

Becker et al. (Reports, 14 December 2007, p. 1775) reported that forest amphibians with terrestrial development are less susceptible to the effects of habitat degradation than those with aquatic larvae. However, analysis with more appropriate statistical methods suggests there is no evidence for a difference between aquatic-reproducing and terrestrial-reproducing species.

In humid, broadleaf-dominated forests where gap dynamics and partial canopy mortality appears to dominate the disturbance regime at local scales, paleoecological evidence shows alteration at regional-scales associated with climatic change. Yet, little evidence of these broad-scale events exists in extant forests. To evaluate the potential for the occurrence of large-scale disturbance, we used 7...

We give an elementary proof of what is perhaps the earliest fixed point theorem; namely Leonhard Euler’s theorem of 1775 on the existence of an axis v for any three-dimensional rotation R. The proof is constructive and shows that no multiplications are required to compute v. Mathematics Subject Classification (2000). Primary 55M20, 01A50.