1910.] DEATHS AT THE SOCIETY'S GARDEN'S DURIXG 1909. 131 



EXPLANATION OP PLATES IV.-VII. 



Plate IV. 



Fig. 1. Congromnrcena mellissii Griinther. 

 -. Murcsna sanctce helence Gimther. 



Plate V. 

 Leirus moselii, sp. n. 



Plate VI. 

 Pimelepterus gallveii, sp. n. 



Plate VII. 



Fig. 1. Eudendrium cunninghami, sp. n. Branehlets with polyps. X 18. 



2. The same. Female sporosacs. X 18. 



3. The same. Male sporosacs. X 50. 



4. C/iondrosia pleheja 0. Schmidt. Surface and vertical section showing- pores 



and pore-canals, p, pore; ic, incurrent canal. X 50. 



5. The same. Thick slice parallel to and a little below surface, ic, incurrent 



canals ; ec, excurrent canals. X 15. 

 fi. Flagellated chamber : pr, prosodus; a_p, aphodus. X 750. 



7. Flagellated chambers. X 425. 



8. Collar-cell. X 1000. 



3. Report on the Deaths which occurred in the Zoological 

 Gardens during 1909. By H. G. Plimmer, F.L S., 

 F.Z.S., Pathologist to the Society. 



[Received January 18, 1910.] 



On January 1, 1909, the number of animals in the Zoological 

 Gardens was 3307, and during the year 1996 animals Avere 

 admitted, making a total of 5303 for the year. 



The number of deaths during the year has been 1492, that is 

 about 28 per cent. ; but if from the above total we subtract 548 

 animals which did not live for six months after their arrival in 

 the Gardens — -that is, roughly, the time at which we find they 

 have got entirely used to their new environment — the percentage 

 of deaths is reduced to 17*8, that is practically the same as 

 the death-rate of 1908. In 1909 the total number of animals 

 was 305 less than in 1908, and the number of deaths 245 less. 

 The weather conditions of 1909 were not at all good, so that the 

 percentage of deaths is really more satisfactory than in 1908, 



Of the 1492 animals which died, 1171 have been examined; 

 of the rest, 131 were killed by order or by companions, 8 were 

 preserved entire for anatomical purposes, and 182 were too 

 decomposed for examination. 



The following Tables show the facts ascertained in outline, and 

 following them are some notes on the most important points. 



Table I. sets forth the actual causes of death in each of the 

 three great classes of animals. Under Reptiles are included 

 batraehians and fishes. 



9* 



