AND THE ZOOLOGY OF CHINA ;,:; 



was brought to this place by the river from the North the 

 Nonm river and Hingan mountains. At the present time on 

 the West of North Manchuria there are discovered some 

 tertiary and post-tertiary remains. In the Chalanor coal- 

 mines, which are of the post-tertiary period the horns and 

 bones of the primitive oxen (Bos primigenius) and jaw-bone 

 teeth and skulls of rhinoceros (Rhinoceros tichorhinus) are 

 often found. It is very remarkable also to find at the source 

 of the Nonni river a whole cemetery of rhinoceros, which 

 calls for attention and careful study. 



Some fossils collected in North Manchuria are now at 

 Harbin in the "Mountain" department of the Chinese East 

 Eailway Administration, in the museum of the Commercial 

 School, in the museum of the Petrograd Mountain Institute, 

 and also in private hands. 



It is probable that in the future the remains of rhino- 

 ceros and mammoth will also be found in other parts of 

 the Manchuria districts, seeing that already there have been 

 similar discoveries in Japan and in North China. 



It is very difficult to get the fossil bones here and to 

 register the findings is almost impossible, since the local 

 Chinese grind the bones of primitive animals to a powder, 

 which is used in native medicine. For this reason we can 

 often see in some Chinese medicine shops in Manchuria the 

 horns of the primitive boxes and these curious goods indicate 

 that here they are not a great rarity. 



III. — The Fresh- Water Algae from the Ponds 

 of South China. 



The present note represents the results of the investiga- 

 tion of a small collection, kindly gathered for me by Mrs. 

 W. E. Myers in the environs of Foochow, and the material 

 was examined in the Petrograd Academy of Science in 1917. 

 The algae sent were collected in different ponds situated not 

 far from the Chinese and foreign buildings. These were 

 covered with the very small tropical water plants — Wolffia 

 arrhiza Wimm. and Spirodela polyrhiza Schleid, Salvinia 

 natans L., Marsilia quadrifolia L. 



Other samples were gathered on the shore of larger and 

 deeper ponds overgrown with lotus plants (Nelumbium 

 speciosum Willd.) Salvinia natans L. and water-chestnuts 

 (Trapa natans L.). 



The basin wholly covered with Wolffia was very dirty. 

 Here the most ' noticeable algae were— Pandorinam or urn , 

 Eudorina elegans, Nitzschia stagnorum, Hantzschia amph- 

 ioxys, Scenedesmus obliquus and Crucigenia triangularis, as 

 well as a number of bacteria and infusoria. 



