506 Cell Lamination of Cerebral Cortex of the Lemur. 
are unable to affirm whether the surrounding cortex corresponds to the 
“visuo-sensory” type of Bolton and Campbell or to their “visuo- 
psychic.” 
Since this paper was written we have received from Professor Brodmann, 
‘Beitréige zur histologischen Lokalisation der Grosshirnrinde, Finite 
Mitteilung’: “Uber den allgemeinen Bauplan des Cortex pallii bei den 
Mammaliern und zwei homologe Rindenfelder im besonderen.—Zugleich 
ein Beitrag zur Furchenlehre,” and ‘ Beitrage zur histologischen Lokalisation 
der Grosshirnrinde,’ VI. Mitteilung: “ Die Cortexglederung des Menschen,” 
which contain an account of his researches on localisation in the lemur’s 
brain. Essentially there is little difference between our results and those 
figured by Brodmann, except that he has defined more subdivisions of the 
cortical types; while we have found the change from one type to another in 
the neopallium to be so gradual that it is hardly possible in most cases to 
define an exact boundary line between them; and we have preferred, as. 
stated in the paper, to leave blank spaces on the diagrams where the inter- 
mediate areas occur, as they seem too indefinite in this brain, both in 
characteristics and in extent, to allow an accurate representation of their 
areas to be given. Thus we have limited ourselves to mapping out the main 
types of the neopallium—namely, the motor, frontal, temporal, post-central, 
and visual types, to pointing out variations in these types, and to giving 
some description in the text of the intermediate areas. Apart from this, his 
diagram chiefly differs from ours in that we have given a broader band for 
the motor area, carrying it further back—especially in the lower part; and 
that we have not carried the visual area so far forward on the dorsal suriace. 
Brodmann’s researches were made with the brain of the Lemur macaco, while 
the species we have used were Lemur brunneus, Lemur catia, and Lemur 
MONGOR. 
