THK SECIIETARY ON ADDITIONS TO THE MENAGERIE. 657 



June 12th, 1923. 



Sir 8. F. IIaumer, K.B.E., F.Il.S., Yice-Piesident, 

 in tiie Chair. 



The Secretak? read the following Report on the Additions to 

 the Society's Menagerie during the month of May, 1923 : — 



The registered additions to the Society's Menagerie during the 

 month of May were 214 in number. Of these 149 were acquired 

 by presentation, 32 were deposited, 22 were purchased, 2 were 

 received in exchange, and 9 were born in the Menagerie. 



The following may be specially mentioned : — 



2 Elephants {Elephas maxmius), from Burma, presented by 

 Dr. Saw Po Min on May 16th. 



A collection purchased from the Soud.an Government on 

 May 14th, consisting of 1 female Giraffe {Giraffa camelopardalis), 

 1 W nvt-llog (Phacochoerus africanus), 4 Arabian Bustards [Eupo- 

 dotis ar(d)s), and 2 Northern Secretary-Birds {Serpentarius 

 serpeniarius gamhiensis). 



2 Abyssinian River-Hogs [Potamochoerus hassama), new to the 

 Collection, purchased on May 5th, 



Mr. D. Seth-Smith, F.Z.S., and Dr. P. H. Manson Baiir, 

 D.S.O., F.Z.S., exhibited phofcogra.plis and sketches, and made 

 remarks upon, the display of Huiistein's Magnificent Bird-of- 

 Paradise {Diphyllodes magnifica hunsteini). 



Miss Alyse Cunningham exhibited, and made remarks upon, 

 a Cinematograph record of the Gorilla "John." 



Mr. E. G. BouLENGER, F.Z.S., exhibited and described models 

 for the rockvvork for the Society's new Aquarium, made by 

 Miss Joan B. Pr,octer, F.Z.S. 



Mrs. Neale exhibited a living Tree-Hyrax {Dendrohyrax 

 dorsalis). 



Dr. II. A. Baylis, F.Z.S., exhibited, and made remarks upon, 

 a Nematode Worm, Toxascaris leonina, from the Domestic Oat. 



Pituitary Gland and Axolotl Metamorphosis. 



Mr. E. A. SpAuii, F.Z.S., exhibited specimens showing the 

 metamorphosis of axolotls induced by injection of pituitary 

 gland anterior lobe extract, and made the following remarks: — 



Recent studies on the relationship between amphibian meta- 

 morphosis and endocrine organs have demonstrated the significant 

 role of both the thyroid and pituitary glands. The acceleration 

 of the metamorphosis of tadpoles to frogs when fed with thyroid 



