ZOOLOGY. 421 



Pro])agation of Sponges. 



Some observations, interesting from a i)liysiological as well as prac- 

 tical point of view, have been pnblished by Dr. E. von Mareuzeller, 

 respecting the propagation of sponges. The investigations in question 

 were made in 1863 and 1872, in the Bay of Socolizza, under the auspices 

 of the Austro Hungarian Government, with a view^ to the imi)rovement 

 of the sponge crop of the Adriatic; but, strange as it may seem, Ihey 

 were regarded with a determined hostility by the inhabitants of the 

 region. This antagonism materially interfered with the investigation, 

 but enough was learned to suggest that, under favorable auspices, 

 sponge- culture could be successfully^ carried on. Winter is the most 

 suitable season for the experiment; clear and sheltered bays the best 

 place. The sponges for ]>ropagation should be carefully gathered, and 

 the cuttings may be best made with a very fine saw. The best size for 

 the cuttings is about a cubic inch. Such pieces, consigned to the water, 

 speedily attach themselves to the surface with which they come into 

 contact, especially if the cut surface is applied. For fuller details refer- 

 ence is made to the Journal of the Society of Arts (v. 29, pp. 592-594) 

 and the Journal of the Eoyal Microscopical Society (2, v. 1, pp. 748- 



751). 



« 



CCELENTERATES. 



GENERAL. 



Chun (C.)- Die Natur imd Wirkungsweise der Nesselzellen bei Coelenteraten. Zool. 

 Am., 4. Jahrg., pp. 646-650. 



SPECIAL CLASSES. 



Andres (Aug.). Prodromus Neapolitanje Actiniarum Faunse, addito generalis Actinia- 

 rum bibliographiie catalogo. Mittheil. zoolog. Station Neapel, v. 2, pp. 305-371. 



ACALEPHS. 



1. General. 



Gnerne (Jul. do). M6duses d'eau douce et d'eau sauniMre. Bull. Sc. D4pt. dii Kord, 



1880 (publ. 1881), pp. 417-424, 

 Ha^ckel (Ernst). Monographic der Medusen. 2. Th. Die Tiefsee-Medusen der Chal- 



lenger-Eeise. Der Organismus der Meduscn. Mit 32 Kupfertaf. uud 8 Holzschn. 



Jena, G. Fischer, 1881. (4to M. 46.) 

 Konianes (George J.). Conchiding remarks on the locomotor system of Medusae. 



I'hilos. Trans. Iloyal Soc. London, v. 171, pp. 161-202. 

 . Medusa} and Hydroid Polyps living in Fresh Water. Quart. Journ. Mic. Sc, 



V. 21, pp. 162-165. 



2. Special orders. 

 TTydroidea. 



Clans (C). Ucbor Acquorea Forskalea Esch. als Acquoride des adriatischen Mceres, 

 zngleich als Kritik von E. Haeckel's Aequoridensystem. Arbeit. Zoolog. Instit. 

 Wicn, V. 3, pp. 283-312, 1881. 



Lankester(E. Ray). On young stages of LymnocodiumGeryonia. Quart. Journ. Micr. 

 Soc., V. 21, pp. 194-201, 1 pi. 



