Abstract
THIS booklet gives a brief but fairly complete summary of the researches which have been pursued by means of dark ground illumination and the ultra-microscope in the domain of biology and medicine. Thus the structure of colloids and of “sols” and “gels” and the minute structure of various animal and vegetable cells as revealed by these methods are epitomised. But the methods themselves receive but the scantiest notice, the theory of the subject and the apparatus being dismissed in the space of a couple of pages. Those who desire to work at the subject will therefore have to seek instruction elsewhere. In some cases we do not think justice is done to ordinary methods of illumination; in Fig. 5, for example, a comma bacillus is depicted as being practically structureless when viewed by transmitted light, whereas with care a certain amount of structure can always be made out. Dark ground illumination no doubt does much to elucidate the finer structure of minute unicellular organisms; how far the ultra-microscope will help remains to be proved.
Dunkelfeldbeleuchtung und Ultramikroskopie in der Biologie und in der Medizin.
By N. Gaidukov. Pp. vi + 83 + Tafel v. (Jena: Gustav Fischer, 1910.) Price 8 marks.
Article PDF
Rights and permissions
About this article
Cite this article
H., R. Dunkelfeldbeleuchtung und Ultramikroskopie in der Biologie und in der Medizin . Nature 85, 72 (1910). https://doi.org/10.1038/085072b0
Issue Date:
DOI: https://doi.org/10.1038/085072b0