The Relation of Science and Religion.pdf - Online Christian Library

256 SCIENCE AND RELIGION.polar cell "a strong process is given off, whichis directly continued into a nerve fibre. * "When we pass next to multipolar cells, we havethe following explanations. " In many localitiest,hey present characteristic forms. In thegray matter of the spinal cord, more especiallyin its anterior horn,? they give rise tonumerous processes, and have a stellate orradiate form. In the gray matter on the surfaceof the convolutions of the cerebrum theyare pyramidal in shape; the apex is directedto the surface of the convolution, the basetowards the white matter; the processes arisefrom the base, apex, and sides of the pyramid."" The processes which arise from amultipolar nerve cell as a rule divide and subdivideas they pass away from the body ofthe cell, until at last they give rise'to branchesof extreme tenuity. These branching processesapparently consist exclusively of cellprotoplasm, and have been called protoplasmprocesses. Gerlach has described the protoplasmprocesses of the multipolar nerve cellsof the brain and spinal cord as forming anexcessively minute net-work, from which mi-* Human Anatomy, i. p. 199.t From which motor nerves emerge. # Ruman Anat., i. p. 200.