i894. A PORTABLE ZOOLOGICAL STATION. 375 



Thus equipped, Dr. Fritsch's portable Zoological Station has 

 done good service ; and when it appeared necessary to remove it to 

 the south of Bohemia in 1892, the incomplete researches on the 

 Unterpocernitz Lake were regarded as so promising that the local 

 landowner, Baron Bela Dercsenyi, was induced to erect a permanent 

 station on its shore on a somewhat enlarged scale. A photograph of 

 the building due to the baron's generosity is reproduced in Fig. 4. 

 It was handed over to the Bohemian Commission in July, 1892, and 

 a large part of the report on which this article is based is occupied 

 with the results of work accomplished here. In the permanent 

 station there is a small second chamber which can be used for meals 

 and sleeping accommodation ; but the laboratory itself is arranged 

 much as in the portable hut already described. 



Progress in researches of the nature undertaken in these stations 

 is necessarily slow, and the time has scarcely arrived to utilise 

 the results in general deductions. Drs. Fritsch and Vavra, in the 

 report now before us, are content to present a well-illustrated synopsis 

 of the fauna and flora of the Unterpocernitz and Gatterschlag Lakes, 

 merely alluding to the wider problems which remain to be solved. In 

 the systematic list there are notes on the varieties of each species, its 

 time of appearance, and normal circumstances of growth ; and many 

 of the illustrations are original. We congratulate the naturalists of 

 Bohemia on their enterprise, and heartily wish them the success they 

 deserve. We only regret that we cannot yet chronicle any similar 

 work in our own more highly-favoured land. But one can hardly 

 hope for any extension of our energies to freshwater, while the study 

 of marine biology remains in the unpromising state to which we 

 allude in our " Notes and Comments " for this month. 



