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PROFESSOR POUCHET. 
principal theories. Some^ with MM. Neumann and Biz- 
zozero, distinctly attribute to the red marrow this function 
in the economy — the production of the hmmatids and the 
provision for the normal regeneration of the elements of the 
blood after accidental losses. 
I think, on the contrary, with M. Hayem, that the 
haematids originate from the globulets of Donne ; only we 
differ as to the origin of these globulets. 
Whilst M. Hayem looks upon them as the endogenous 
product of cells which are as yet unknown, it seems to me 
that everything goes to prove that they are formed in the 
blood plasma whilst in circulation, in a way which is more 
or less analogous to the formation of the filaments of fibrin 
in blood which has been drawn from the vessels. 
