STUDV OF r.UAINS OF SIX EMINENT SCIENTISTS AND SCHOLARS. 271 



Gyres of the Temporal Lobe. — The supertemporal gyre is quite tortuous and well 

 developed. The remaining gyres are of good width and, so far as could be examined, 

 appeared to be richly marked by fissures. 



TJte Insulse. — As stated above, it was possible to examine the insulse more closely 

 than in any other brain in this series because the dissection necessary to expose these 

 parts was permissible in a specimen already worthless for other purposes. Casts of the 

 insuliTe thus exposed were carefully made with a wax-paraflfine mixture and from these 

 several positive casts in plaster of Paris were secured for permanent use. 



Both insulse show a high degree of development, but with one notable difference, 

 viz. : the preinsula, or that portion nearest the motor speech centers of the cerebral 

 mantle, is lai'ger, better developed and more prominent on the left side than on the 

 right. The dimensions of the insulse are : 



Left. Right. 



Cephalo-caudal length . . . . . .5.4 cm. 4.9 cm. 



Transinsular diagonal width .... 4.2 " 3.9 " 



Dorso- ventral width .3.-5 " .3.4 " 



Height of the insular from the mesal surface . 4.5 " 4.4 " 



These measurements show that the left insula as a whole is also larger than its 



fellow on the right side. 



HARRISON ALLEN. 



Born in Philadelphia, April 17, 1841. His parents were Samuel Allen and Eliz- 

 abeth Justice Thomas. His ancestors accompanied William Penn, and on his father's 

 side he was descended from Nicholas Wain, distinguished in the early history of Phil- 

 phia. Although he would have preferred pure science, financial considerations led 

 him to study medicine, including dentistry, at the University of Pennsylvania. He 

 was on duty for a time at the Blockley Hospital, and on January 31, 1862, he was 

 appointed Acting x\ssistant Surgeon U. S. A., and Assistant Surgeon, July 30, 1862, 

 serving in hospitals and in the defences of Washington until the acceptance of his 

 resignation, December 8, 1865. He then ranked as Brevet Major. 



Dr. Allen now practised his profession with assiduity and success. His dental 

 education facilitated specialization in respect to the air passages, and in 1880 he was 

 President of the American Laryngological Association. Of his strictly medical and 

 surgical publications (numbering about fifty) most relate more or less directly to his 

 specialty. 



But while he earned his living by medicine Dr. Allen devoted much time and 

 thought to science and published many valuable contributions on comparative and 

 human anatomy. In Professor Wilder's biography of Dr. Allen, from which these 

 data are taken, about 200 monographs are listed. His investigations on the bats of 



A. p. S.— XXI. II. 4, 11, ^07. 



