. The Journal of comparative neurology and psychology. 676 141 4931185 1678 TABLE the observed number of medullated nerve fibers innervating the musclesand skin of the shank in the frog IIB. (Adapted from Dunn, 1902.) Muscular. Cutaneous. L. R. L. R. To. 322* 216* T^S. 20* 31* Tla. 147 142 Tib. 260 347 T2a. 126 125 T2b. 136 134 Pb. 480 482 Pc. 42 46 Pd. 75 52 Pla. 2 47 P2a. 457 464 P2b. 24903 26942 Total to shank 1188 1170 Paa. R. art. genu. 9 10 Pa^. R. art. pedis 8 8 1205 1188 *In the original article the records for the muscular fibers of T/? appeared in thecolumns for th
. The Journal of comparative neurology and psychology. 676 141 4931185 1678 TABLE the observed number of medullated nerve fibers innervating the musclesand skin of the shank in the frog IIB. (Adapted from Dunn, 1902.) Muscular. Cutaneous. L. R. L. R. To. 322* 216* T^S. 20* 31* Tla. 147 142 Tib. 260 347 T2a. 126 125 T2b. 136 134 Pb. 480 482 Pc. 42 46 Pd. 75 52 Pla. 2 47 P2a. 457 464 P2b. 24903 26942 Total to shank 1188 1170 Paa. R. art. genu. 9 10 Pa^. R. art. pedis 8 8 1205 1188 *In the original article the records for the muscular fibers of T/? appeared in thecolumns for the cutaneous fibers and the cutaneous of Ta in those for muscular fibers. 694 Journal of Comparative Neurology and Psychology, gives a composite dissection of the lumbo-sacral plexus of the leopardfrog, Rana pipiens, with the lines broken at the points at whichcounts were made. Tables I and II explain the designations andthe destinations of the individual nerve branches. S^, So, and Soindicate successive levels in the course of the nervus Fig. 1. The succeeding tables present the findings for frog E, with the addi-tion of explanatory findings for the control frog IIB in Tables VI,VII, VIII, X and XVII. Frog E was a female, length 229 mm., corrected weight at thetime of killing 49 gTams. The initial corrected weight could not be Dunn, Medullated Nerve Fibers. 695 ascertained at the time of operating and when obtained showedundoubted loss of weight in the frog due to its eight months of fast. The control, frog I IB, was a female, length 234 mm., correctedweight grams. If we consider first some general statements regarding the findingsfor frog E, Table HE introduces the counts at the levels of interestin the main trunks of the nerves innervating the leg. The distri-bution of neive fibers to the leg in the frog is by the nervus cruralisand the nervus ischiadicus. All the nerve fibers of the nervuscruralis are distributed to the thigh, while the nervus ischiadicus,
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