7 6 



THE WOMBAT. 



The Number of Recent Species of Animals. The editor of 

 the Zoological Record, with the assistance of his staff of 

 recorders, last year made an estimate of the number of described 

 species of recent animals. The numbers are as follows : — 



I. 



Mammalia 



2,500. 



2. 



Aves 



12,500. 



3- 



Reptilia and Batrachia 



4,400. 



4- 



Pisces 



12,000. 



5- 



Tunicata 



900. 



6. 



Mollusca 



50,000. 



7- 



Brachiopoda 



150. 



8. 



Bryozoa 



1,800. 



9. 



Crustacea 



20,000. 



IO. 



Arachnida 



10,000. 



1 1. 



Myriapoda & Prototracheata 



3,000. 



12. 



Insecta 



250,000. 



13" 



Echinoderma 



3,000 



14. 



Vermes 



6,150. 



IS- 



Ccelenterata 



2,000. 



16. 



Spongiae 



1,500. 



17- 



Protozoa 



Total, 



6,100. 





386,000. 



Reintensification. " What can be done to reintensify a 

 negative which has been intensified with mercury and ammonia 

 and is not dense enough ? " Bleach the negative in the 

 mercury solution, and then, after washing, apply Schlippe's 

 salts 24 grains, ammonia 5 minims, water 2 oz., and wash 

 well and dry. Photographic News. 



Makeshift Weights. A new sovereign weighs 123-274 

 grains, a shilling 87-273 grains, forty eight pennies 1 lb. avoir., 

 a halfpenny and a threepenny piece \ oz., a florin and a six- 

 pence ^ oz., three pennies 1 oz., four half-crowns and a shilling 

 2 oz., four florins, one half-crown, and two pennies 4 oz. 



Photographic News. 



RAINFALL REGISTRATIONS AT GORDON 

 TECHNICAL COLLEGE FOR 1897. 



Month. 



Days of Rain 



Rainfall for 

 Month. 



Days Rain 



Since 1/1/97 



Total Rain- 

 fall Since 



1/1/97. 



April 

 May 

 June 



8 



12 



7 



•56 



2'34 

 1-47 



37 



49 

 56 



9-08 

 1 1-42 

 12-89 



