THE DISCOVERY OP MOTOR AND SENSORY NERVE CHANNELS. 293 



trlfacialis and Porliu minor quinti paris vcl nervus masticatorius . He 

 also describes very fully and accurately the applications of his know- 

 ledge to practical medicine. Tic douloureux is for him due to affection 

 of the portio major, trismus to affection of the portio minor, and his 

 description of the symptoms and pathology of facial palsy — i.e., Bell's 

 palsy, as it is now commonly termed — deserves to be quoted as the 

 first classical account on record of this affection: — ■ 



Page 181, XLIII. — Pathologica milii est septimi paris observatio. Decumbe- 

 bat vir in noscomio Divi Joannis, eximii Professoris Geri curas commissus, cui a 

 longo tempore tumor inrlammatorius erat pone auram dextrarn, et supra piuces- 

 sum mastoideum, et infra extensus, ita ut nervuni facialem in proprio exitu 

 e foramine stylo-mastoideo comprimeret, sicuti et eel. Professoris, et Chirurgia; 

 Doctorum Gallo et Riberi opinio certa videbatur. Interim in ipso aegrotante 

 universa fere musculorum dexteri lateris faciei observabatur paralysis, et oris 

 in sinistram partem distortio. Perfecta scilicet erat paralysis musculi frontalis, 

 supraciliaris, orbicularis palpebrarum, elevatoris ate nasi, et labii superioris, 

 canini, zygomatici, orbicularis labiorum in dextra parte, triangularis, et quadrati 

 menti, et colli cutanei. Integer erat motus, aut levissime kesus, musculorum 

 temporalis, masseteric^, buccinatorii, pterygoideorum ; de digastrico nullum ferre 

 judicium potuimus. Globi oculi, et palpebral superioris motus erat liber; lsesus 

 tamen aliquantisper visus in oculo dextero ; lingua pariter cum aliqua ditficultate 

 movebatur, gustus nihilominus utroque in linguae latere asque superstes, ut 

 experimento sumus assecuti; pariter sensus tactus integer in facie, auditus 

 quammaxime imminutus in dextra aure, sed apertus erat abscessus in aure 

 externa. Periit post menses duos circiter. Inventum pus in cavo tympani 

 effusum, in aquseductu Fallopii contenturn, et facialem in ipsius transitu com- 

 primens ; nil pm'is post mortem, nee inrlammationis vestigia circa foramen stylo- 

 mastoideum ; recentis vero inllammationis, et suppurationis indicia in dextro 

 cerebelli lobo, integra atque illassa quinti paris stamina et truncus. 



I made the following observation on the seventh pair. A man was lying in 

 the hospital of St. John committed to the care of Professor Gero, on whom for a 

 considerable time there had been an inflammatory tumour behind the right ear 

 and above the mastoid process, and extending downwards so that it compressed 

 the facial nerve at its exit from the stylo-mastoid foramen, in the decided 

 opinion of the celebrated Professor, and Doctors of Surgery Gallo and Ribero. 

 In this patient there was observed paralysis of nearly all the muscles of the right 

 side of the face, with a distortion of the mouth towards the left side. The 

 paralysis was complete of the following muscles, viz. — the frontal, superciliary, 

 orbicularis palpebrarum, of the elevator alas nasi, of the elevator labii superioris, 

 of the canine, of the zygomatic, and of the orbicular muscle of the lips on the 

 right side, of the triangularis and the quadratum of the chin and of the cutaneous 

 muscle of the neck. Motion was intact or very slightly affected in the temporal, 

 masseteric, buccinator and pterygoid muscles; as regards the digastric we could 

 come to no definite conclusion. There was free movement of the eyeball and 

 of the upper eyelid. Vision was to some extent impaired in the right eye, and 

 the tongue moved with some difficulty; taste was, however, equally preserved on 

 both sides of the tongue, as was ascertained by experiment; the sense of touch 

 was unimpaired over the face; hearing was as far as might be undiminished in 

 the right ear, but the abscess was open on that side. About two months later 

 the patient died. There was found to be effusion of pus in the tympanic cavity 

 and in the aqueduct of Fallopius, compressing the facial nerve. There was no 

 pus, nor sign of inflammation in the neighbourhood of the stylomastoid foramen; 

 there were distinct signs of recent inflammation and of suppuration in the right 

 lobe of the cerebellum; the main divisions and the trunk itself of the fifth pair 

 were uninjured. 



Bellingeri also gave a complete tabular summary of the branches 

 of the two portions of the fifth nerve. His description of the 



