1862 



Journal of Applied Microscopy 



cartilages. They are purely of mesodermal origin, and the ectoderm contributes 

 merely to the nervous tissue. c. a. k. 



Ricbard, J. Les Campagnes Scientifiques de A most excellent resume of the explora- 

 S. A. S. le Prince Albert I«' de Monato. ^- c ^u a v„ \-t^ u- x. 



i4opp.avec6ofigs.dansletexte. Monaco, tions of the OCean and its life, which 



1900. the Prince of Monaco has carried on 



since 1885, was prepared by Dr. Richard for the exhibit made by the Prince at 



the Paris Exposition. The work 

 in part is historical, recounting the 

 various voyages, and deals at 

 length with the equipment for deep 

 sea work and the most remarkable 

 finds in the different zoological 

 groups. Many excellent figures of 

 deep sea animals occur in the 

 text. The physical and biological 

 equipment is quite fully described. 

 Of especial interest is the self- 

 spreading surface net, which makes 

 it possible to sweep a strip seven 

 meters in width. The net is so 

 hung and so stretched by floats 

 and weights that the wings spread 

 whenever the net is drawn. The 

 deep-sea traps devised by the 

 Prince have yielded phenomenal 

 catches even in the great depth of 

 5310 meters. As shown in the ac- 

 companying figure (A) a wooden 

 frame supports a covering of net- 

 ting into which large funnels lead 

 from two faces. Smaller funnels 

 (a) lead into smaller cylinders of 

 wire mesh, designed for small 

 animals such as Ainphipoda. Bags 

 of ballast (/-) hold the trap in 

 place upon the sea bottom and a float of sufficient size carries the weight 

 of the cable, which leads from the traps to the surface. It was customary 

 to bait these traps with fish, refuse from the galley, etc., and the catch was usually 

 composed of the more agile forms which escape the net and trawl. These traps 

 have proved to be most useful additions to the equipment for deep sea work. 



c. A. K. 

 Citroa, Ernest. Beitriige zur Kenntniss des 



feineren Baues von Syncoryne Sarsii. Arch. Material for this research was secured 

 f. Naturgesch. Jahrg. 68 Bd. I., 1-27, from a salt water aquarium which had 

 Taf. I, 2, 1902. been previously stocked with a few 



small colonies. Richly branched and exceptionally well developed colonies were 

 found in this aquarium during spring months and produced swarms of medusse. 

 Young colonies were found upon the algae, on shells of Mytihis, and on the 

 sides of the aquarium. In this last position the growth of the hydrorhiza could 

 be followed very readily. Concentrated solution of sublimate in sea water poured 

 over the expanded animals was used as a fixing agent. Mayer's alum carmine 

 or dilute gentian violet was used as stains. For the study of ganglion cells the 

 hybrids were killed in one-half per cent, osmic acid, washed in water and placed 

 in pyroligneus acid. After washing, these preparations were mounted in 

 glycerine. c. a. k. 



f^^^'SJZ. 



Fig. A. I. Trap in position; 2 and 3, details of 

 joints and lacing ; 4, float with cables and 

 swivels. 



