284 REPORTS ON THE STATE OF SCIENCE, ETC. 
APPENDIX D—continued. 
(ii) A pointer rotates on a dial, half of which is covered. On the cover is a mark, 
(iii) 
— 
=r; 
— 
(ii) 
(iii) 
(i) 
(ii) 
and the candidate reacts when, in his opinion, the pointer is directly beneath the 
mark. 
(Engine drivers, train staff, shunters and pointsmen : Dresden.) 
Two moving bands intersect as shown. The circle represents a pedestrian and 
the square a car. Both bands are driven by an apparatus with brake and 
accelerator, the ‘ pedestrian’ band being controlled by the examiner and the 
other by tbe subject. The latter’s task is to move the ‘car’ round as quickly 
as possible without colliding with the pedestrian. 
(Street railways, Leipzig.) 
Two pointers move with different but constant velocities along a horizontal 
scale, and the candidate has to estimate at what point on the scale they will 
meet (if they are moving towards one another) or at what point one will overtake 
the other (if they are moving in the same direction). 
(Tram drivers, Société des Transports en commun de la Région Parisienne). 
4, DirvipED ATTENTION, 
Ten variously coloured electric lamps are arranged in a row, and each has a plug - 
hole, similarly coloured, corresponding to it; below is a second row of lamps 
of the same colours but in a different order, each having a coloured plug corre- 
sponding to it. The lamps in the top row are lit, two or three at a time; and, 
when this happens, the candidate has to put plugs from the bottom row into the 
correspondingly coloured holes in the top row; this extinguishes the top lamps 
and switches on the bottom ones. At the beginning of the test a number is 
announced, and the candidate is told that he will be required to repeat it at the 
end of the test. During the test twelve other numbers are announced; one of 
these is written on a card and placed before the candidate, and he is required to 
react when he hears it. 
(Telephone girls : Technische Hochschule, Charlottenburg.) 
A short story is placed before the candidate, who has ten minutes in which to 
cross out the a’s, e’s and n’s in the text. From time to time figures are exposed— 
a ‘ warning ’ being given in each case by the lighting of a lamp—and at the end 
of ten minutes the candidate writes down as many of the figures and as much of 
the story as he can remember. 
(Printers and Compositors : Pedagogisch-Psychologisches Institut, Munich.) 
The candidate has to react to light and sound stimuli by pressing appropriate 
keys, and to reverse, when necessary, three sand-glasses which run out in 4, 1 and 
3 minutes respectively. A clock which runs down every 2 minutes has also to 
be kept wound—the candidate having to judge whether the clock has stopped 
by the tick alone, the face being invisible. 
(Chauffeurs: Amsterdam.) 
5. ACCURACY AND STEADINESs. 
An iron bar with a taper from 5 to 10 mm. has to be pulled up as far as possible 
through a 12 mm. hole without touching the sides. Contact with the sides 
completes a circuit which causes the bar to be attracted and held fast by an 
electro-magnet. 
(Foundry workers: Hanover.) 
The candidate is given a sheet of paper on which the terminal points of the lines 
of a figure are indicated by dots. A pencil is held vertically in a clamp, and the 
