. Journal of comparative neurology . l nerve ), ventral bundle (posterior root) I, cell group III, cell group II III, cell group III IV, cell group IV b, tract b c, tract cex, tract ex d, tract d e, tract e/ tract f Fiber, tracts fl, tract flI, tract 1m, tract mn, tract np, tract pr, tract r PLATE 1 EXPLANATION OF FIGURES Figures 1 to 9 are drawn from whole mounts of the heads. The nerve celllayer is stippled, the fibrous core blank. Oc. 2, obj. AA, Zeiss, table-level, re-duced one-half. 1 The brain of the queen of Camponotus pennsylvanicus. 2 The head and brain of the worker of C. p
. Journal of comparative neurology . l nerve ), ventral bundle (posterior root) I, cell group III, cell group II III, cell group III IV, cell group IV b, tract b c, tract cex, tract ex d, tract d e, tract e/ tract f Fiber, tracts fl, tract flI, tract 1m, tract mn, tract np, tract pr, tract r PLATE 1 EXPLANATION OF FIGURES Figures 1 to 9 are drawn from whole mounts of the heads. The nerve celllayer is stippled, the fibrous core blank. Oc. 2, obj. AA, Zeiss, table-level, re-duced one-half. 1 The brain of the queen of Camponotus pennsylvanicus. 2 The head and brain of the worker of C. pennsylvanicus. 3 The head and brain of the male of C. pennsylvanicus. 4 The head and brain of the queen of Formica schaufussi. 5 The head and brain of the worker of F. schaufussi. 6 The head and brain of the male of F. schaufussi. 7 The head and brain of the queen of Lasius niger. 8 The head and brain of the worker of L. niger. 9 The head and brain of the male of L. niger. 558 BRAINS OF THREE GENERA OF ANTS CAROLINE BURLING THOMPSON. PLATE 2 EXPLANATION OF FIGURES Figures 10 to 16 are taken from a series of frontal sections of the head of thequeen of Lasius niger, beginning at the anterior end. The fibrous core is mottled,the nerve cell layer is blank. Oc. 4, AA, Zeiss, stage level. 10 Section through the anterior part of the protocerebral lobes, , and theantennary lobes, , anterior to the mushroom bodies. 11 Section through the anterior part of the mushroom bodies, and showingthe origin of the labro-frontal nerve, , from the antennary lobe. 12 Section through the stalks, st, of the mushroom bodies, and the anteriordorsal protocerebral commissure, 562 BRAINS OF THREE GENERA OF ANTS CAROLINE BURLING THOMPSON 0. n. PLATE 2
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmedicine, bookyear191
