Northwestern University Dental School - Purple and Gold Yearbook (Evanston, IL)

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ORGANIC STRUCTURES, in process of development, pass from a state of simple, unstable, incoherent homogeneity to one of complex, stable, coherent heterogeneity 3 jrarz'g5assu with these structural changes is manifested an innate tendency to both local and general functional specialization. As specialization of parts proceeds, unused organs become rudimentary, losing their specific elements-leaving only connective tissue behind. The first branchial cartilaginouslbar of the embryo evolvesdistally the upper and lower jaw' bones, proximally the bones of the middle ear, between these extremes, the primitive bar of cartilage dwindles to a yestigal structure, the sphenomandibular ligament. , Everywhere, in developing and functionating structures, is growth the correlative of function, and atrophy the correlative of inactivity. I The human brain forms no exception to a general rule. The mind of a dental student is simple, unstable, incoherent and homogeneous, that of the grad- uate complex, coherent, heterogeneous. If, as a practitioner, he discontinues men- tal activity along the line of his professional studies, then, in harmony with the natural order of things, will he' become rudimentary, vestigal - a sadly dilapi- dated. back number in the current library of his professional confreres. 61

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5 i Q i I Y A F 4 i n I I V VVILLIAM THOMAS AECKLEY, M. D Professor of Anatomy.

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But, -friends, Truth is within ourselvesg it takes no rise From outward things, whate'er you may believeg There is an inmost center in us all, Where truth abides in fulnessg and around, 1 Wall upon wall, the gross flesh' hems it in, This perfect, clear perception-which is truth. -Paracvlszzs by ROBERT BROWNING Go, demand Of mighty Nature, if 'twas ever meant That we should pry far off, yet be unraisedg That we should pore, and dwindle as we pore. -Wonnswvo RTH. 62