68 Proceedings of Royal Society of Edinburgh. [sess. 
this case, he supposes that the biliary secretion may have forced 
its way. This figure of Professor Browicz I here reproduce (fig. 2). 
I am given to understand that the preparations of injected liver, 
now for the first time described, have been in use for class purposes 
in the Physiology Department of the University for a number of 
years, sections having been regularly cut from them and mounted by 
members of the class. It was whilst going round the Histology 
Class this summer that I first noticed the appearances in question. 
None of my present assistants were able to give me the history of 
the liver from which the preparations were made, nor had their 
attention been drawn to the intracellular channels which all the 
sections show. But I found in the collection of specimens which 
were left to the University by the late Professor Rutherford 
several sections, apparently of this same liver (rabbit), and others 
n c 
Fig. 2. — Liver cell showing intracellular canaliculi (Browicz).* n, nucleus ; 
c, canaliculi. 
purporting to be made from the liver of the cat, some of which 
are labelled in his handwriting (others in that of some other 
person), “ injection in hepatic cells ” ; one of these specimens bears 
the date 1886. I accordingly wrote to Professor Carlier, who 
was at that time, and for some years subsequently, assistant 
to Professor Rutherford, for any information he could give 
me regarding the specimen. In Professor Carlier’s reply he 
says, “these specimens of liver injected in red were done by 
Simpson under my direction, and used for class purposes. These 
canals were first noticed by me and shown to Rutherford, who 
would not let me publish a note of them.” 
I imagine this refusal by Professor Rutherford to permit of the 
publication of Dr Carlier’s observation was due to his having 
* Taken from Szymonowicz, Lehrl. d. Histologie, 1901. 
