and Laboratory Methods. 2341 



which passes out into the cuticle a bunch of cuticularized fibers. These are 

 clearly cilia, arising from blepharoblasts. In the mid-gut are quite frequently 

 ciliated cells, although the number of cilia per cell is greatly reduced, most cells 

 have but few, many only two, in all parts of the mid-gut. The epithelium is 

 covered with a thin, vertically striated cuticle, through which the few cilia pro- 

 ject. Further, each cilia has its blepharoblast, and in the cells where only two 

 cilia exist, two bodies are formed, resembling in position and appearance the cell 

 centrosomes. a. m. c. 



Webb, T. C. Apparatus for Removing Pieces This apparatus is designed to remove 

 of Tissue for Microscopical Examination. tissue by suction. A piece of glass 



Journ. Brit. Dental Ass., 23 : 4^8-440, ^ , . ^, ■ 1 ^i r • u • 



J tj tt . tubmg, three-eighths of an inch in 



diameter, is attached to an aspirator, 



the tissue is drawn up into the tube and easily snipped off with the scissors. 



A. M. c. 



Werner, R. Artificially Induced Anomalies in The author experimented with the 

 Cell Division. Archiv. Mikr. Anat., 61 : effects of ether spray. The cold brings 



8!;-i22, pi. I, 1002. Rev. Journ Roy. Micr. , ^ i-r i- j n 1 • u 



Soc Pt 6 161; igo2. ' about proliferation and cell-lesions, ab- 



normal modes of cell division ensue. 

 Most are amitotic, some are mitotic. The amitotic are in a sense simplified 

 mitosis; there is an unsymmetrical and incomplete rearrangement of the chro- 

 matin before metakinesis, and on this other phenomena depend. Although not 

 of equal value to mitosis, viable cells result from this amitotic process. Giant 

 cells of unicellular origin arise either by stimulation of centers and paralysis of 

 the periphery (Weigert) or by a hindering of cell-wall formation through persist- 

 ent activity of the centers (His). a. m. c. 



CURRENT ZOOLOGICAL LITERATURE. 



CHARLES A. KOFOID, University of California. 



Books and Separates of Papers on Zoological Subjects should be Sent for Review to Charles A. 

 Kofoid, University of California, Berkeley, California. 



Cunnington, W. A. Studien an einer Daphnide, On account of the protecting exoskele- 

 .Siinoct'f'/ialiis siiiui. Beitrage zur Kenntnis , •, • 1 1 ^ 1 



des Centralnervensystems und der f einer ^on it IS absolutely necessary to use 

 Anatomie der Daphniden. Jenais Zeitschr. fixing agents which penetrate with ease 

 N. F. Bd. 30: 447-^20, Taf. 24-26, IQO^. , . ,. ... 



^^' ^ ' ^ ' V J ^^^ rapidity. Picnc mixtures, espe- 



cially the stronger picro-sulphuric of Kleinenberg, were therefore employed. 

 The ether-alcohol mixture employed by G. W. Miiller for Ostracoda interfered 

 with the subsequent staining of Sitnoccphahis. The best results were obtained 

 by using a saturated solution of picric acid in an alcohol (1 part) and ether (5 

 parts) mixture. The animals were shaken in this fluid for 1 minute, then trans- 

 ferred to 70 per cent, alcohol until the picric acid is all removed. They were 

 then stained in toto in Ehrlich's haematoxylin and counterstained on the slide in 

 orange G. In order to avoid the aqueous solution of orange G ordinarily 



