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It is safe to say that there are no two eases precisely alike, and it is rare 

 that we find mental conditions that are strikingly the same in different 

 individuals ; however, it is possible to name some of the more general 

 characteristics. One of the most prominent characteristics of the feeble- 

 minded girl is mental stupor. She apparently dreams, sits in the pres- 

 ence of certain powerful stimuli unmoved. She is lethargic, inactive and 

 apparently mentally depressed. My own experiments show that the sense 

 organs of feeble-minded girls are about normal, their eyes may be defi- 

 cient and they may have defective hearing, but this does not seem to be 

 any more a characteristic of the feeble-minded girl than the average high 

 school girl. My data show that the percentage of such defects are about 

 the same for the two classes of girls. It should be said, too, that many 

 feeble-minded girls are supersensitive ; their vision is very sharp, their 

 hearing is extremely acute and other senses seem to be abnormally de- 

 veloped. It is only in the organization of this sense material in the 

 higher brain centers that their mental weakness is discovered. The feeble- 

 minded girl normally does not like to play ; complex games are difficult 

 for her to comprehend and she can only be taught them with very great 

 patience and much repetition. By the use of the Bergstrom kronoscope, I 

 have secured the reactions of several hundred feeble-minded children. 

 These reactions are both slow and irregular. There is no reliability in 

 the response to a stimulus. Reactions may not be slow in some instances, 

 but they are invariably inconsistent and show great mean variations. I 

 also have the records of several hundred girls as to their vital index which 

 is found by dividing the weight by the vital capacity. The median of the 

 vital index of these feeble-minded girls is several points lower than the 

 median for high school girls. Feeble-minded girls are usually below nor- 

 mal in height and weight. The feeble-minded girl is irresponsible morally, 

 she is not mentally capable of knowing the nature of crime or its ultimate 

 results. She sees in her own acts, which may be immoral, no social sig- 

 nificance whatever. She is in no sense responsible for her acts of im- 

 morality. Feeble-minded girls are subject to fits of anger and lack of 

 control. This seems to be merely a phase of retardation in her development 

 and is the line of least resistance through which she reacts upon an un- 

 favorable environment. Her acts are nearly all upon the low level of 

 response to sense stimuli. The feeble-minded girl is only educable to a 

 very small degree ; she may learn to read, but she can not comprehend 



