Notes and queries on anthropology / edited for the Council of the Anthropological Institute by John George Garson, M.D. and Charles Hercules Read, F.S.A.

Date:
1892
Catalogue details

Licence: Public Domain Mark

Credit: Notes and queries on anthropology / edited for the Council of the Anthropological Institute by John George Garson, M.D. and Charles Hercules Read, F.S.A. Source: Wellcome Collection.

Provider: This material has been provided by University of Bristol Library. The original may be consulted at University of Bristol Library.

    66/272 (page 52)
    3 Expose some of the dots (not more than seven or eioht at a time) by covering the remainder with a card or a piece ^^:i:str^^'' ^-^^ J''^ J'^'' ■ ^P^ frequently to provide against deception ; by usmg a covering card with a square portion cut out of one corner, six different groups of dots mav be exposed without exceeding the number of dots above- mentioned. The test-dots should be kept perfectly clean At what distance cau a man count the test-dots iu coi^ormity with the instructions on that head ? Power of distant vision can only be tested by ex- temporised modes of comparisons with that of Europeans It has been noticed that amongst North American Indians a smtxJi distant object on the prairies will be recoo-nised by each individual at the same instant and give rise to a simiiltaueous exclamation from the whole party. The power of judging distance may be greatly improved by practice • but some men show far greater natural aptitude than others In the case of native troops, when judging-distance practice IS conducted according to the English method, the results of the practice should be recorded. The following are the rules for judging-distance practice ; the object judged from is usually a group of two or three men ; the number of answers and points obtained should ije recorded. The value of men's answers, by points, in the several classes IS as follows :— 3rd class, or when judging ] within 5 yards 3 points distance between 100 and I „ 10 „ 2 „ 300 yards J „ 15 „ 1 point. 2nd class, or when judging) ^r. j „ distance between 300 and I ^ P°l*'- 600 yards J » » ^ Vomt. 1st class, or when judging I -.i • or, jo distance between 600 and P^*^^ yards 2 points 900yai-ds J „ 1 point.