Surveying Methods


    (1) THE title of the first of these books is ill chosen. The subject is the technique of air photography for topographical purposes. There are brief excursions into map reading and plotting, but they, like the bibliography, are but notes by an amateur for amateurs. On the other hand, the technique of flying, photographing, developing, indexing, ‘mosaicing’, and the like, shows the hand of an experienced and practical man. Mr. McKinley knows his own subject. He is an enthusiast, for he thinks that the “exclusive use of ground surveying will … become obsolete”. On the other hand, he realises that “no one factor has retarded advancement … so much as the assertion of exaggerated claims”. He writes for an American audience, describes American aircraft and cameras, and uses such words as “restitution” (of air photographs) and such expressions as “dividing the polyconic projection into rectangles”. Enough has been said to show that Mr. MeKmley's book will be a useful one for pilots and photographers; but of small value to the surveyor who has to apply these photographs to his map-making.

    Applied Aerial Photography.

    Capt. Ashley C. McKinley. With a Chapter on Oblique Aerial Surveys (Canada) by A. M. Narraway. Pp. xiv + 341. (New York: John Wiley and Sons, Inc.; London: Chapman and Hall, Ltd., 1929.) 25s. net.

    La topographie sans topographes: traité de photogrammetrie.

    F. Ollivier. Pp. xviii + 301. (Paris: Éditions de la Revue d'Optique théorique et instrumentale, 1929.) 42 francs.

    Mesure optique des distances et méthode des coordonneées polaires avec étude spéciale du tachéeomètre auto-réducteur Bosshardt-Zeiss.

    Par Rodolphe Bosshardt. Prof. Maurice Delessert. Pp. 172. (Genève: Georg et Cie, 1930.) n.p.

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    Surveying Methods. Nature 127, 810–811 (1931).

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