166 REVIEWS. 



prolongations, or septa, dividing the gland into a number of 

 lobules. Many lymph-vessels are contained in these septa. The 

 substance of the lobules is made up of cells resembling lymph- 

 cells, supported by a delicate network of trabeculas. 



H. F. Parsons. 



[It would appear from Kolliker's '' Human Anatomy," p. 401, 

 that the Thymus does not always cease growing immediately after 

 birth, but continues to increase up to the second year of life. It 

 then generally remains unaltered for some time longer, and the 

 period at which it finally disappears seems to be somewhat 

 uncertain. KoUiker himself has found it well nourished, and 

 having just the same structure as in childhood, in individuals 

 twenty years old ; others say that atrophy commences between the 

 eighth and twelfth years, whilst the period of its complete disap- 

 pearance cannot be positively referred to any definite age, though 

 it is not, as a rule, found after the fortieth year. Certain portions 

 of it are gradually absorbed, while there goes on simultaneously a 

 development of fat-cells and of connective tissue, and thus the 

 glandular structure becomes in time entirely effaced. — Editor?^ 



IRcpicwe* 



THE POSTAL PHOTOGRAPHICAL SOCIETY. 

 There have been forwarded to us the. Rules and Prospectus of 

 this newly-formed Society, and we herewith subjoin a copy of the 

 latter. — 



"The Postal Photographical Society. — The above has 

 been founded as a Postal Society for the convenience of amateurs 

 in different parts of the country, and with the following objects — 

 For the circulation of prints, negatives, etc. ; for the exchange of 

 photographs and of information on photographic matters, and for 

 the general advancement of the Science and Art of Photography. 

 It is to be noted that this Society will in no way interfere with any 

 Society now in existence, but will rather tend to the advancement 

 of existing Societies by bringing their members more into com- 

 munication with each other. Entrance Fee, 2s. 6d. ; Annual 

 Subscription, 5s. Further information and a copy of the rules 

 may be had on application to H. H. Cunningham, Hon. Sec, 

 7, Figtree Court, Temple. Committee : — G. Allison, Stoke-on- 

 Trent ; F. C. Cowley, Brighton ; T. G. Horton, Royal Military 

 Academy, Woolwich ; J. Pocock, 21, Ladbroke Grove, London,W." 



