The röle of the chondriosomes in the cells of the 
guinea-pig's pancreas. 
By 
George Arnold, M. Sc. 
(From the Cancer Research Laboratory, University of Liverpool. 
Mrs. Sutton Timmis Memorial.) 
With plate XII. 
So much lias been written on the histology of the pancreas, that some 
justification is needed for adding yet another paper to the extensive 
literature dealing with that subject. 
It will not be my object to give an introductory summary of our 
knowledge of the structure and secretory phenomena exhibited by the 
pancreatic cells, as a very complete account, up to and including the year 
1900, can be obtained in the encyclopaedic work of Oppel, in his “Lehr- 
buch der vergleichenden mikroskopischen Anatomie der Wirbeltiere”. 
Since that date however, the work of a not inconsiderable number of 
investigators, but especially of Benda, Meves, and Duesberg, has brought 
into prominence the important part which is played in the economy of 
the cells by certain cytoplasmic structures, the chondriosomes 1 ), a know- 
ledge of which has helped to remodel our ideas of cell structure and cell 
physiology. 
I liave given in a recently published paper dealing with pathological 
changes in the epidermal fibrils in epithelioma (Arnold 1911) a short 
summary of our present knowledge of the chondriosome, to which the 
attention of the reader is called, to avoid unnecessary repetition in these 
pages. 
The term chondriosome was introduced by Meves to describe those 
structures which are to be found in the cytoplasm, in a granulär (mito- 
The term chondriome has been introduced recently to replace the name chon- 
driosome. The advantage, if any, is doubtful. 
