63 



das citronsaure Eisenoxyd -Ammonium anstatt des schwefelsauren 

 Eisenoxyduls, wie ich früher that, anwende. 



Ganz besonders vortheilhaft erweist sich mein Verfahren auch 

 zur Darstellung der Chlorophyllbänder und Pyrenoide bei Spirogyren 

 und anderen Conjugaten; desgleichen zur Sichtbarmachung der Kerne 

 beiDiatomaceen, so daß die Botaniker wohl ebenso gut wie die Zoologen 

 und Anatomen von der angegebenen Methode werden Gebrauch machen 

 können. In ganz vorzüglicher Weise werden auch karyokinetische 

 Figuren durch die geschilderte Tinctions weise sichtbar gemacht. 

 Derartige Praeparate habe ich in der hiesigen Biologischen Station 

 folgenden Herren demonstriert: Herrn Prof. B. Solger (Greifswald), 

 Herrn Privatdocenten Dr. Kaestner (Leipzig), Herrn Dr. W. Vavrâ 

 (Prag), Herrn Dr. med. Kraft (Hamburg-Eppendorf ) , Herrn Dr. E. 

 Walter (Cöthen) und Herrn cand. med. Brühl (Berlin). 



2. Zoological Society of London. 



16tli January, 1894. — The Secretary read a report on the additions 

 that had been made to the Society's Menagerie during the month of Decem- 

 ber 1893. — Mr. Sclater exhibited and made remarks on a drawing of the 

 head of a Monkey [Cercopithecus erythrog aster] in the Paris Museum forwarded 

 to him by M. Pousargues, of that institution. — An extract was read from 

 a letter received from Mr. C. B. Mitford, describing an invasion of Lo- 

 custs observed at Free Town, Sierra Leone. Mr. C. O. Waterhouse had re- 

 ferred the specimens of these insects sent home to Pachytylus migratoroides. 

 A further extract from the same letter gave an account of the occurrence of the 

 Elephant in the district of Sierra Leone. — Mr. R. Lydekker, F.Z.S., 

 gave an account of some of the principal objects observed during his recent, 

 visit to the La Plata Museum, calling special attention to the splendid series 

 of remains of Dinosaurian Reptiles, of Cetaceans, and of Ungulates of three 

 different suborders. Mr. Lydekker also made remarks on some of the spe- 

 cimens of Edentates and of the gigantic birds of the genus Brontornis. — 

 Mr. Lydekker also exhibited a painting of the head of a Wild Goat [Ca- 

 pra aegagrus) of unusual size. — On behalf of Mr. J. Jenner Weir, F.Z.S., 

 a specimen of the Tsetse Fly [Glossina morsitans) from the Transvaal was ex- 

 hibited. — Mr. Tegetmeier exhibited a curiously barred variety of the 

 Common Pheasant. — A communication was read from Prof, W. N. Par- 

 ker, containing remarks on some points in the structure of the young of 

 the Australian Echidna. — A communication was read from Mr. Roland 

 Trimen, F.R.S., giving an account of a collection of Butterflies made in 

 Manica, Tropical South-east Africa, by Mr. F. C. Selous in the year 1892. 

 Of 166 species represented in the series, 44 were stated to be of general 

 distribution, and of the remainder (amongst which were 9 apparently new to 

 science) 26 were peculiar to the South-Tropical area of Africa. — A com- 

 munication received from Dr. A. B. Meyer, C.M.Z.S., contained remarks 

 on a rare African Monkey [Cercopithecus Wolß), accompanied by a coloured 

 drawing. — Dr. A. Günther, F.R.S., gave an account of a collection of 

 Reptiles and Fishes made by Dr. J. W. Gregory during his expedition to 



