Prof. Ernst HaecM. 29 



IV. Reports on the Zoology of H. M. S. Challenger. 



1. Deep-sea Medusa (32 plates), 1880. 



2. Deep-sea Keratorae (8 plates), 1889. 



3. Siphonophorse (50 plates), 1888. 



4. Kadialaria (740 plates), 1887. 

 V. Vogages and Travels. 



1. Articles on Corfu, Brussa, Teneriffe, Norway, 



etc., from the Deutsche Rundschau, 1866 

 to 1878. 



2. India and Ceylon, and Egypt (published in Ger- 



man, English, etc.), 1882. 



To those who wish to be introduced to our author per- 

 sonally, we say read his India and Ceylon, and he will live 

 with you as a delightful friend and companion ever after. 

 No book of travels is superior to it not even Darwin's 

 Voyage of the Beagle, said to be the best of all. In it 

 we learn to admire the physical courage and dexterity which 

 served him so well in the moving incidents of flood and 

 field. We see in him a good physical type of the German, 

 a little over six feet tall, body well proportioned, firm but 

 not gross, with brainy head, straight face, auburn hair, 

 grayish-blue eyes, and sanguine temperament of the true 

 knight ; ready for the contest with Virchow at Munich, the 

 elephant hunt on the Ceylon mountain, or the dangers of 

 the coral grove in the depths of the Indian Ocean. To ap- 

 preciate these physical and mental qualities, think of a Ger- 

 man professor naked and open-eyed in such a water-world 

 as this 1 We quote from his experience at Punta Gallia : 



" The entire attraction of a coral bank can not be seen 

 from above, even though you float .immediately over it at 

 ebb-tide, and the water is so shallow your boat scrapes 

 against the points. A descent into the fluid element is 

 therefore necessary. Not possessing a diving-bell, I at- 

 tempted to swim to the bottom, keeping my eyes open, and 

 after considerable practice accomplished this feat. Quite 

 wonderful, then, is the mystical green glimmer that illumines 

 the whole of this submarine world. The fascinated eye 

 is continually surprised by the most remarkable light-effects, 

 quite different from those of the familiar upper world with 

 its ' rosy radiance ' ; and doubly curious and interesting are 

 the forms and movements of all the thousand different creat- 

 ures swarming in the coral gardens. The diver is in a new 

 world. Here are multitudes of remarkable fishes, crabs, 



