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This is the first major study for thirty years of the cell biologist Oscar Hertwig, whose matriculation and retirement encompass the creation and collapse of Imperial Germany. Paul Weindling's book enriches our view of the period by drawing attention to the distinctive positions on biological and social issues of a neglected figure. Hertwig began as one of(More)
That we perceive the past through the categories of the historian is a truism never so obvious as when a perceptive historian changes the categories. It is time someone wrote an account of how the historians have constructed the chemical revolution. For it is within this creation that Lavoisier nearly always appears. Somehow the appropriate frame of(More)
Fabry-Perot-like resonant transmission of microwave radiation through a single subwavelength slit in a thick aluminum plate is quantified for a range of slit widths. Surprisingly, and in contrast to previous studies [e.g., Phys. Rev. Lett. 86, 5601 (2001)]], the resonant frequency exhibits a maximum as a function of slit width, decreasing as the slit width(More)
agriculture" (pp. 193-267), "Medicine". including pharmacology (pp. 269-357), and "Sociology" (pp. 359-365). This volume is printed on good-quality paper, and is beautifully bound in glossy paper covers. One could easily appreciate the amount of work that was put into the preparation of the manuscripts of this volume, and in seeing them through the press.(More)
Few mechanisms exist in nature that effect colour reflectivity, simultaneously high in spectral purity and in intensity, over a strictly limited portion of solid angle above a surface. Fewer still bring about such colour reflectivity with an angle dependence that is distinct from the colour transition associated with conventional multilayer interference. We(More)
The wing-scale microstructures associated with two species of Papilio butterfly are described and characterized. Despite close similarities in their structures, they do not exhibit analogous optical effects. With Papilio palinurus, deep modulations in its multilayering create bicolor reflectivity with strong polarization effects, and this leads to additive(More)
literature, but also on a detailed survey of the objects on which the literature was based, by a practised histologist familiar with the longer-lasting techniques. The result is an attractively-produced book containing a wealth of illustrations from a wide range of sources, including pictures of old preparations made through the microscope as well as(More)
historical dimensions of one of these questions; the implications of instrumental diagnosis. He charts the rise of the major diagnostic instruments of the nineteenth and early twentieth centuries, and chronicles their gradual and not always enthusiastic adoption by the medical profession. He vividly illustrates both the profound diagnostic possibilities of(More)
The esterases used to identify monocytes are best demonstrated using alpha-naphthyl butyrate as substrate. However, the reagents commonly used for this stain are time-consuming to prepare and are unstable. This report describes a quick, easy, and reproducible staining method using stable reagents which are readily available commercially but which may also(More)