254 SUMMARY OF CURRENT RESEARCHES RELATINfl TO 



material, and on Bacteria, both indifferent and virulent. It can thrive in 

 the most varied media when albumen is present and free acid absent. The 

 author describes the form as " ascoid." 



Adelosina.* — M. C. Schlumberger is of opinion that to insure a suc- 

 cessful study of the Miliolidae it is indispensable to make delicate sections 

 passing through the initial chamber. Starting, for a type, with Adelosina 

 hicormis, which is very common in the Mediterranean, he calls it form A, 

 and then he compares with it another kind which he calls form B ; con- 

 sidering these species and comparing them with three species of Biloculina, 

 he finds that form A presents a special character common to all the indi- 

 viduals of each of these groups. In Adelosina it is a megasphere completely 

 enveloped by the first chamber, which becomes lenticular ; in Biloculina it 

 is a megasjihere with two series of chambers in two planes of symmetry ; 

 in Triloculina and Quinqueloculina the megasphere is surrounded with three 

 or five series of chambers. In form B of all the four genera the microsphere 

 is always suiTounded by a cycle of five chambers. The author concludes 

 that in the classification of the Miliolidfe the form A determines the genus, 

 and form B the species. In Spiroloculina, however, it is to be noted that 

 there may be an initial polymorphism in form A. 



New Form of Sarcodina.t — Dr. E. Moniez describes a new and unique 

 parasite, found in the visceral cavity of several species of Ostracoda and 

 Cladocera, but especially in Cijpris salina. A number of the extraordinarily 

 variable individuals are described and figured, and the general charac- 

 teristics, such as they are, are summed up as follows ; — body flattened, of 

 variable size and form, consisting of absolutely homogeneous protoplasm ; 

 reproduction by fissures which may appear at any point of the individual 

 mother, and constrict off a mass of protoj)lasm which forms a new individual. 

 The unique and enigmatical species is named Schizogenes parasiticus. Were 

 it not a parasite, the author would place it without hesitation among the 

 Monera, but making allowance for the probable degeneration, is inclined 

 provisionally to rank it with the Ehizopoda as a new family of Sarcodina. 



New Type of Sporozoa.l — Di*. E. Moniez gives an account of Gymno- 

 spora, a new type of Sporozoa, which he found in a larva of Vanessa urticae, 

 and which appears to be one of the Coccidia ; its spores differ from those 

 of Klossia in having no thick investing membrane ; as the test is black, the 

 species may be called 0. nigra. 



BOTANY. 



A. GENEHAL, including the Anatomy and Physiology 



of the Fhanerogamia. 



a. Anatomy. § 



(1) Cell-structure and Protoplasm. 



Growth of Plasmolysed Cells. || — According to Herr G. Klebs, cells of 

 Zygnema and OSdogonium, which have been plasmolysed in 10 per cent, 

 glucose, retain their life for a long time in this condition, and exhibit 

 phenomena of growth. The strongly contracted protoplasts of Zygnema 



* Bull. Soc. Zool. France, xi. (188G) pp. 544-57 (1 pi.). 



t Journ. Anat. et Pliysiol., xxii. (1886) pp. 515-23 (1 pi.). 



X Bull. Soc. Zool. France, xi. (1886) pp. 587-94. 



§ This subdivision conraiiis (1) Cull-structure and Protoplasm; (2) Other Cell- 

 contents; (3) Secretions; (4) Structure of Tissues ; and (5) Structure of Organs. 



II SB. Versamml. Dcutsch. Naturf. u. Aerzto, Sept. 22, 1886. See Bot. Centralbl., 

 xxviii. (,1886) p. U6. 



