December 11, 1896.] 



SCIENCE. 



867 



THE NEW PSYCHOLOGICAL LABOBATOBY AT 

 LEIPZIG. 



The accompanying plan, published by 

 kind permission of Prof. Wundt, shows the 

 arrangement and dimensions* of the new 

 rooms into which the Leipzig Institut fur 

 experimentelle Psychologie has recently moved. 

 Of these rooms, situated on the second 

 floor of the magnificent stone structure now 

 being completed for the University, only 

 those on the west side face the street; the 

 others open on large quiet courts, and thus 

 offer the seclusion so necessary for undis- 



from the batteries of the laboratory and 

 from the general city current. They can 

 also be darkened if need be. The other 

 eighteen or more rooms are likewise pro- 

 vided with both kinds of electric current, 

 and by means of a central switchboard can 

 be electrically interconnected in such 

 groups as the special investigations require. 

 Rooms 1 to 5 are arranged more partic- 

 ularly for experiments in optics, room 1 

 having north light, while the others open 

 toward the south. No. 2a is the dark room, 

 and adjoining it to the south is its small 



turbed experiment. At the same time, the 

 entire set of rooms, except the two lecture 

 halls marked A and B on the plan, are shut 

 off from the rest of the building in which 

 they are situated and are accessible only to 

 members of the Institut. 



These lecture rooms, with a seating 

 capacity of 420 and 117 respectively, are 

 fully equipped for purposes of demonstra- 

 tion. They are electrically supplied both 



* In meters. 



antechamber provided with an outside 

 platform upon which the heliostat or simi- 

 lar instruments may be placed. ISTo. 3 is 

 the Director's Room. In rooms Nos. 4 and 

 5 are kept various pieces of optical appara- 

 tus, for instance, the large perimeter and 

 Helmholtz's double spectroscope. The 

 spaces farther to the w^est, marked C and D, 

 are occupied by closets and the stairs lead- 

 ing to the laboratory. 



The meetings for the introductory course 



