125 



and to record the course and relations of these nerves by making 

 diagrammatic sketches. The dissecting was watched carefully by all 

 of the instructors in the dissecting room. 



After the student had completed and labeled a sketch which 

 illustrated the distribution of the nerves in a given region, the 

 dissection of which he had just completed, the instructor in special 

 charge of the investigation carefully compared the sketch with the 

 part dissected, corrected its errors and, if necessary, personally 

 completed the dissection in its finer details. To facilitate the keeping 

 of the records special printed diagrams were prepared, which illustrated 

 diagrammatically the bones and the body contour in various regions ^). 

 The general relations of the nerves and the muscles are easily indicated 

 on these "Outline Charts". 



In addition to the record of the nerves, a record was kept of 

 the color, sex and age of the body dissected and, during the past 

 two years, of the conditions of the muscles and skeleton and of any 

 marked peculiarities of bodily structure. 



Owing to the condition of the part dissected, to poor dissecting, 

 or to an utter incapacity upon the part of some students to make 

 efficient records, a certain number of the "Record Charts" have no 

 scientific value and have been rejected in the compilation of the tables. 

 The majority of the students, however, have shown a readiness and 

 an intelligence in the work for which those having it in charge are 

 indeed grateful. Only because of this ready willingness on the part 

 of the students, and of the active sympathetic interest taken in the 

 work by all of the instructors in anatomy, has it been possible to 

 carry on the work successfully. We wish especially to thank Dr. Lord 

 and Dr. Harrison for their unfailing courtesy, and Dr. Mall for his 

 €ver ready suggestion and help. 



Literature. 



There has recently been a considerable amount of attention given 

 to the study of the nerve plexuses from which the nerves of the limb 

 arise. This investigation has been extended to several classes of 

 vertebrates. 



Of the more important recent articles relating especially to the 



1) "Outline Record Charts" used in the Anatomical Laboratory of 

 the John Hopkins University, John Hopkins Press, Baltimore 1900. 



