163 



des chromosomes découvertes par Flemming. Il donne le même nom 

 de uUdouhlement longitudinah aux deux phénomènes, ce qui le con- 

 duit à étendre aux anses jumelles l'hypothèse de Strasburger sur le 

 sort des produits de la seconde segmentation transversale. Mais dans 

 les sciences d'observation autre chose est l'hypothèse, autre chose la 

 constatation objective du fait. Je répète, en terminant, que Monsieur 

 Guignard n'a pas même soupçonné qu'il importait de rechercher, 

 je veux dire de constater objectivefïient, avant de l'affirmer le che- 

 minement en sens opposés des éléments résultant du dédoublement des 

 chromosomes primaires. 



III. Mittheilimgen aus Museen, Instituten etc. 



1. Anfrage. 



eingeg. 15. März 1890. 



In den von M. Cassaigneau herausgegebenen Vorlesungen 

 J. Kunstler 's über die Enteropneusten (in: Journ. de Micrographie, 

 1889) ist ein Balanoglossus tricollaris (patria: mare Indicum) aufgeführt. 

 Da es mir — auch durch briefliche Anfrage bei Herrn Kunstler — 

 nicht gelungen ist, in Erfahrung zu bringen, von wem resp. an wel- 

 chem Orte die genannte Species beschrieben worden ist, richte ich auf 

 diesem Wege die Bitte an diejenigen Fachgenossen, denen die ge- 

 wünschten Angaben bekannt sein sollten, mir dieselben zukommen zu 

 lassen. Prof. J. W. Spengel. 



Gießen, Zool. Institut. 



2. Linnean Society of New South Wales. 



Annual General Meeting. 29th January, 1890. — The President, Pro- 

 fessor W. J. Stephens, M.A., F.G.S., in the Chair. — The President de- 

 livered the Annual Address, in which, after a brief retrospect to the origin 

 of the Society, and a statement of its present position as regards original and 

 elected members, he proceeded to give an account of the Life and Works of 

 the late Julian E. Tenison- Wo ods , a Vice-President of the Society, and 

 one of the largest contributors to its Proceedings. He then exhibited a tabu- 

 lated record of the various donations which the society had received by way 

 of exchange from other institutions, and more particularly of the very large 

 additions which had been made during the last year to the library by Sir 

 William Macleay, including more than 700 volumes of very valuable books. 

 After a general account of the operations of this and other Australasian 

 Scientific Societies during 1889, and reference to topics of local interest 

 which had been dealt with in the Transactions of European and other geo- 

 graphically remote Societies, he drew the attention of members to the bust 

 of Sir William Macleay, which had been obtained by a general subscription 



