QUARTERLY CHRONICLE, 135 
the ciliated epithelial cells of the intestinal canal in Anodonta, 
that there is a manifest continuation of the cilia into the 
protoplasm of the cell. In researches on this subject the 
author recommends a half or one per cent. solution of bi- 
chromate of potass, or a half per cent. solution of hyperosmic 
acid, and, as colouring matters, aniline or, especially, carmine. 
6. “ Researches on the Development of the Urinary and 
Sexual Systems,” by Dr. C. Kupffer—A former part of these 
researches was given in the first volume of the ‘ Archiv,’ 
p- 233, and the subject as continued in the present embraces 
—1l. The development of the kidneys in the fowl. 2. The 
formation of the allantois (?) in osseous fishes; in which, 
however, the author’s inquiry seems to have been limited to 
Gasterosteus aculeatus and Gobtus minutus. 
7. “On the Development of the Tissues in the Tail of the 
Tadpole,” by Prof. C. J. Eberth, of Zurich. 
8. “ On the Developmental History of the Muscles,’ by the 
same.—The chief object of this communication is to show 
the correctness of the view first fully established by Eilhard 
Schultze, that each transversely striped muscular fibre pro- 
ceeds from a single cell. Schultze established this point 
from observations on the caudal and other muscles of the 
tadpoles of Bombinator igneus and Triton. He found that 
the single fibres, which could be traced in the above and a 
few other situations from end to end, are for the most part 
multinuclear cells, between which, however, lie numerous 
uninuclear cells with multiple nucleoli. This fact having 
been thus established in the Vertebrata, Prof. Eberth has 
endeavoured to show that the muscular fibres in some, at 
least, of the Invertebrata present the same conditions. His 
observations were made in the embryos and young of several 
Arachnida in different stages of development. He found the 
muscles of the palpi especially well adapted to his purpose. 
In these muscles he fully satisfied himself that each fibre was 
the product of a single cell. 
9. The shorter communications at the end of the part 
contain—l. One by Prof. Neumann, of Konigsberg, “‘ On 
the Presence of Crystals in the Blood in a Case of Leukemia 
formed after death.’”’—The formation of these crystals com- 
menced several hours after the blood was taken from the 
body, and on the next day had so increased that a large 
number of crystals was found in every drop of the blood. 
The crystals in question were very delicate, symmetrical, 
colourless, brilliant, slender spicules, which on closer exam1- 
nation were found to have the form of an elongated octa- 
hedron; that is to say, each half represented a four-sided 
