620 THE CEREBRAL RELATIONS OF 



other immediately) it seems evident that, in proportion to 

 the degree of these particular defects, there must be a 

 diminution in the power of Speaking, and a hinderance, 

 though to a less extent, in the process of Thinking. 



Two kinds of defective Verbal Memory require to be 

 distinguished.* One of them is dependent upon a dimin- 

 ished activity in one or other of the parts of the Brain 

 concerned with the verbal associations above referred to. 

 Such diminution may amount to a more or less complete 

 arrest of action or paralysis, hence this variety may be 

 named Paralytic Amnesia. The other kind of defect is 

 related to an irregular or 'perverted activitij of the parts 

 in question. They act, but they act wrongly. It is not 

 that words cannot be revived, but rather that Avrong words 

 are revived, just as an ' ataxic ' man produces wrong 

 movements of his limbs. This second variety may, there- 

 fore, fitly enough be distinguished as Incoordinate Am- 

 nesia. Though the two conditions may exist separately, 

 they are often combined in different proportions, 



a. Paralytic Amnesia. 



Under this head may be included a momentary forget- 

 fulness and confusion about proper Names and Nouns, 

 with power of recovery after a time ; or there may be a 

 more permanent and habitual forgetfulness of Names of 

 objects, persons, or places, with attempts to remedy this 

 forgetfulness by employing a periphrasis in place of the 

 Noun, which cannot be recalled. 



Different degrees and special varieties of this kind of 

 defect are recorded in the following sections. 



* In reference to Memory generally, some very suggestive and 

 original views may be found in a paper by the late Dr. Laycock, in 

 '• Edin. Med. Jrnl.," April, 1874. 



