QUARTERLY CHRONICLE OF MICROSCUPICAL SCIENCE, 187 
or moulds of fibrous bundles in the substance of a cell or 
nucleus. 
3. The sesamoid cartilage in the Achilles tendon of the 
frog contains elements which are not really cartilage-cells, 
containing beside a large oval nucleus a stellate granular 
body, stained brown by iodine. 
4, The ossified tendons of birds are true bone, but the 
fundamental bone-substance is chiefly represented by altered 
tendinous bundles, which here play the part of Sharpey’s 
fibres. It may hence be called bone almost exclusively made 
up of Sharpey’s fibres. 
5. The tendinous bundles in all periods of development 
take their rise in a mass of cartilage, and terminate in a 
primitive muscular bundle. The bundles may be seen passing 
into the intercellular substance of the cartilage, and the 
tendon-cells corresponding to the rows of cartilage-cells, while 
transitional forms of cells are seen. Thus are explained 
both the occurrence of cartilaginoid cells in tendon, and the 
tendency of this tissue to ossify. (‘ Archives de Physiologie,’ 
1874, p. 181.) 
2. Structure of Tendon.—Goff and Ramonat (‘ Journal de 
Anatomie,’ 1875, p. 16) publish a paper on the cells of 
tendon, in which they arrive at the following conclusions :— 
(1) The cells of tendon are of a laminated nature (nature 
lamineuse), as shown by reagents. (2) These cells arise 
from free nuclei which become surrounded by a fusiform 
cellular body, at the extremities of which are formed the 
laminated fibres. (3) These elements adapt themselves so 
as to fill the whole interfascicular space. (4) The cells 
remain fusiform in some tendons, and in all the tendons of 
some animals. They are generally small in the large tendons 
of adult mammalia. 
3. Adenoid Tissue in the Larynz.—Heitler (‘ Stricker’s 
Medin. Jahrbiicher,’ 1874, p. 874) states that adenoid 
substance constantly occurs in the normal mucous membrane 
of the human larynx, and especially in the following parts : 
—The aryteno-epiglottidean folds near the spot where the 
pavement epithelium makes a transition to the cylindrical ; 
the surface covering the arytenoid cartilages themselves, 
and especially the upper part of this, overlying the cartilages 
of Santorini; the membrane covering the most anterior divi- 
sion of the ventricles of Morgagni, and especially the folds 
of that part which form a blind sac directed upwards. 
Beside these masses of adenoid substance, Heitler describes 
a diffuse infiltration with small cells, extremely variable in 
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