HYDROPHOBIA. 333 



management and work of the whole wing that is placed 

 under his supervision. In the left wing M. Chamberland 

 superintends the department of applied or practical bacteri- 

 ology ; in the right wing M. Gamaleia presides over the 

 subject of comparative mioro-biology or bacteriology. In each 

 of these departments, in addition to the special incubating 

 chambers required by the workers, is a general incubating 

 chamber, constructed like that in the first storey, but on a 

 larger scale, and also a general laboratory, in which may be 

 carried on all the sterilizing, preparation of gelatine, broths, 

 &c., for which special apparatus is required. 



This is the extent of the laboratory proper, but in the 

 garden which surrounds the main building are found scat- 

 tered other structures, apparently less important, but all 

 of them required for the carrying on of the work of this 

 immense establishment. 



First comes a building, parallel to the main block, in which 

 is accommodation for animals, which are kept in elevated 

 cages constructed of iron bars on every side ; they are so 

 raised from the sloping asphalt floor, that they can readily 

 be flushed. At the two ends of the building three small 

 rooms have been set apart for operation on small animals that 

 come to be treated in the Institute. In a special house, which 

 is very well arranged for the reception of dogs, each animal 

 has its special cage, where it can be properly looked after, 

 watched, and fed, without it being necessary for the atten- 

 dant or observer to come actually in contact with it. 

 Near this is another series of animal houses, also with 

 asphalt floors, which are used for stock, or for animals that 

 being experimented upon require special isolation. The 

 rabbits that are inoculated for the preparation of the specific 

 fluid, during the incubation period of their attack of hydro- 

 phobia occupy a special house, which is also kept at a con- 

 stant temperature in order that the periods of incubation 

 may be kept as uniform as possible. A special arrangement 

 of the cages in which these animals are enclosed allows of 

 their bedding being changed and of their being kept clean 

 without its being necessary to open the cage. A gutter, with 

 walls of glass placed below the cages, which can be well 

 flushed by a stream of water, serves to carry off' the urine 

 which makes its way. through the floors of the cages. Then 

 come a run for hens,- and smaller hen-coops, an aviary, and 



