THE PROGRESS OF SCIENCE 



383 



with the use of the magnesium flash- 

 light and electric arc lamps, bince 

 that time excellent aquatic photo- 

 graphs in aquaria have been made by 

 Dr. R. W. Schufeldt, Mr. A. R. Dug- 

 more and others, but the photography 

 of fishes and other subaquatic life has 

 by no means reached the degree of per- 

 fection that has recently been obtained 



water is shallow, and good results can 

 be secured when ways are found by 

 which the light reflected from the sur- 

 face of the water is cut off and a 

 smooth surface is obtained. In deep 

 water, however, and for many pur- 

 poses it is necessary to use a sub- 

 merged camera. Professor Reighard 

 describes the apparatus he used at the 



Albrecht von Hallee. 



Eminent as physiologist, botanist and poet, the two hundredth anniversary of 

 whose birth will be celebrated by the University of Bern on October 15. 



in photographing birds and wild mam- 

 mals in their natural habitats. 



Professor Jacob Reighard, in a recent 

 bulletin of the Bureau of Fisheries, has 

 taken up the subject and describes 

 methods of subaquatic photography, 

 both when the camera is outside the 

 water and when it is submerged. The 

 former method must be used when the 



Tortugas, and examples of the photo- 

 graphs taken are here reproduced. 

 According to Professor Reighard's de- 

 scription, in the upper picture a 

 butterfly-fish (Chwtodon capistratus) 

 with a stripe through the eye and an 

 eye-like spot on the tail is seen over 

 a flat expanse of coral ( M eandrina) 

 and at the base of a large, branching 



