PAPERS READ. 



FURTHER REMARKS ON PHOSPHORESCENT 



BACTERIA. 



By Dr. Oscar Katz. 



In the course of my investigation of phosphorescent bacteria 

 from sea-water, I have been able to obtain three more kinds, in 

 addition to the three of which I gave a preliminary account at the 

 Meeting of this Society, in June last.* As a detailed description of 

 their morphological and biological properties will not be forth- 

 coming for some time yet, I may be permitted to give some few 

 outlines of these new species. Generally speaking they are, 

 as before, easily cultivable on or in a variety of nutritive substances, 

 of which certain marine animals (fishes, etc.), must especially be 

 mentioned, and added to common sea-water they can i-ender it 

 luminous just as the organisms already alluded to (I.e.) 



I. (IV). 



The first kind — or the fourth, continuing the succession — which 

 I propose to name Bacillus argenteo-'plios'plwresGens liquefaciens 

 (rather a long specific name), was secured in a sample of sea-water 

 from Bondi Bay, a few miles south of Sydney, on the 11th 

 September last. By mixing 10 drops of this water with liquefied 

 gelatine in a test-tube, and causing the mixture to solidify along 

 the inner walls of the tube, I noticed, among others, after some 

 time several luminous colonies of the bacillus. 



It forms short straight, now and then slightly curved, rods of 

 about -002 mm. in length, and about |- of it in width (this is 

 according to stained cover-glass preparations taken from agar-agar 



* See Proceeduigs of this Society, Vol. II. Series 2nd. Part 2, 1887, 

 p. 331, 



