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BIOLOGICAL PHYSICS 



structure of the parts to contradict it, but, on the contrary, 

 and by embryological enquiry, we can clearly satisfy 

 ourselves of its claims to belief then we think we have 

 established another reason calling for a continuation of 

 this enquiry, with a view to the obtainment of ever 

 required utilitarian results, such as a clearer knowledge of 



FIG. 53. SKETCH OF A SUPERFICIAL DISSECTION OF THE FACE, SHOWING 

 THE POSITION OF THE PAROTID AND SUBMAXILLARY GLANDS. 

 (Allen Thomson.) |. 



/, parotid gland ; /', socia parotidis ; d, the duct of Stenson before it perforates the 

 buccinator muscle ; a, transverse facial artery ; , n, branches of the facial nerve 

 emerging from below the gland ; f, the facial artery passing out of a groove in 

 the sub-maxillary gland and ascending on the face ; stn, superficial portion of the 

 submaxillary gland. 



the etiology of the diseases of these organs, and their 

 relationships to their structural elements as affected by 

 these views, as, for instance, where discontinuity of usually 

 firmly adherent and coherent textures becomes effected 

 along lines previously open in embryonic conditions, such 

 as occur in the condition known as detached retina. 



The enumeration of the special otic and ophthalmic 

 cerebro-spinal lymph excretory agencies, as well as the 



