HYDROPHOBIA. 33! 



theatre. Close to the lecture-theatre is a photographic depart- 

 ment, specially designed and fitted up by M. Roux, for the re- 

 production of bacteria and other microscopic objects. At the 

 end of the block, at the right and left of the central corridor, are 

 two rooms with well-fitted aquaria, which are specially fitted up 

 for carrying on researches, under the supervision of M. Metsch- 

 nikoff, on aquatic animals. The two rooms on the ground 

 floor, specially set apart for experiments upon large animals, 

 are provided with a good wide door opening to the outside. 

 The concrete pavement, sloping towards a green, permits of 

 this being readily cleansed. The remainder of this floor is oc- 

 cupied by a kind of store-room and a laboratory set apart for 

 general use, in which are stored and prepared the bouillon and 

 other nutrient media. Here also is carried on the glass-blow- 

 ing ; a skilled artizan supplying workers with flasks, pipettes, 

 tubes, and other vessels they may require. A large staircase 

 situated at the end of the central gallery puts the labora- 

 tories of the basement in easy communication with those of 

 the storeys above. The first storey is divided into duplicate 

 halves, one on the right, the other on the left of a passage. 

 That on the left is set apart for M. Duclaux's department of 

 general micro-biology ; that on the right to practical biology, 

 over which M. Roux presides. The central corridor leads to 

 a large concreted workroom, nearly twelve metres square, 

 which is well lighted with nine large windows. Around the 

 room are seven work tables, each of which is covered with a 

 thick sheet of volcanic lava, the surface of which is enamelled 

 so that it has the appearance of an immense sheet of porce- 

 lain. Each is fitted for two workers. Every worker has 

 before him a window, from which light is obtained for the 

 microscope on his right or left side, according to his position. 

 At the table is a gas connection, from which gas may be 

 conveyed to any desired point ; here also is water, which is 

 received into a sink, also of enamelled lava. A small sliding 

 board, which may be drawn out and used as a desk, is placed 

 on the other side of the table, away from the central pro- 

 jection which carries the sink ; this allows the worker to 

 make for himself a little retreat, in which he sits surrounded 

 by all that he requires. When work is over for the day 

 everything except the microscope is put away in a couple of 

 small cupboards which are placed at the disposal of the worker. 

 This is absolutely necessary in order that the room and the 



