712 NERVOUS SYSTEM. 



Pathological Facts bearing upon the Functions of the Cerebellum. Nearly all writers 

 upon the physiology of the nervous system, while they agree that extirpation of the cere- 

 bellum in the lower animals produces irregularity of movements, are arrested, as it were, 

 in their deductions, by the following quotation from Andral, in his report of ninety-three 

 cases of disease of the cerebellum : 



" A more remarkable alteration of movement is noted in the observation of M. Lalle- 

 mand. The patient staggered on his legs, and often came near falling forward. In this 

 case, the only one which tends to confirm the opinion of physiologists who regard the 

 cerebellum as the organ of the coordination of movements, the cerebellum was entirely 

 transformed into a sac filled with pus." 



The bare statement, such as is generally made, that Andral collected ninety-three 

 cases of disease of the cerebellum, only one of which tends to show that this is the 

 organ of muscular coordination, is sufficient to arrest any physiologist in the conclu- 

 sions that would naturally be drawn from experimental facts ; and many writers have 

 expressed themselves as uncertain upon the question of the function of the cerebellum. 

 Before we go any farther, we wish to settle, once for all, the physiological bearing of 

 these cases ; and, with this end in view, have carefully studied, analyzed, and tabulated 

 them. Out of the ninety-three cases, fifteen were observed by Andral, and seventy- 

 eight are quoted from various authors. An analysis of these cases, with reference to 

 conditions likely to complicate the effects of the cerebellar disease, etc., is given in the 

 following table : 



Analysis of AndraVs Ninety-three Cases of Disease of the Cerebellum. 

 {Six Cases, observed by Andral. 1 ) 



Hemiplegia ; death in fifty hours . . V -. -. . ' .'-..'. ] case. 



Hemiplegia ; sudden death . *". . . . , . .' . . . 1 " 



Hemiplegia ; death in two days V V : .'- . 1 " 



Hemiplegia ; associated with cerebral haemorrhage . - . ' .- v. -'.'''. . 3 " 



(Seventy-eight Cases, quoted from various Authors.) 



Haemorrhage into the cerebellum ; quoted from Serres . . ; ; ....'* + . 6 * cases. 



quoted from Dance . . r, . - * . 1 f case, 

 quoted from Bayle . '. . .: . l:f " 

 quoted from Guiot .' . ...... . ..- . . : , ; . 1 " 



(Serres); hemiplegia ; .; .. ./ { -.*, -.,,.-. 2 cases. 

 (Gazes); coma . /; .. ,'. .. ., ., j ,,..' 1 case. 



(Morgagni) ; found dead ..... !".. . . 1 " 



(Sedillot) ; died in fifteen minutes . . .1 " 



(Cafford) ; died suddenly '. '- ; ". : ' . 1 



Haemorrhage (Michelet) ; apoplexy two years before death ; found an old clot in the 



right lobe of the cerebellum . . . / 1 



Haemorrhage (quoted from various authors) ; haemorrhage into the cerebrum as well 



as the cerebellum . , , . . 9 cases. 



Atrophy of the left cerebral and the right cerebellar hemisphere . ' ' .*' . . 2 

 Cases of disease, with paralysis ; quoted from various authors . ... .9 



Cases of abscess, with paralysis ; quoted from various authors 3 " 



Cyst (Recamier) ; convulsions 1 case> 



Abscess (Laugier) ; convulsions . 1 " 



Abscess, involving the entire cerebellum (Lallemand); want of coordination 2 1 



Cases, quoted from various authors, in which no disturbance was noted in the move- 

 ments ; the disease was confined to one lateral lobe of the cerebellum . . 5 cases, 

 i In these six cases, there was haemorrhage into the cerebellum. 

 This is the single case, noted by Andral, out of the ninety-three, the only one showing want of coordination. 



