Slide showing diagram of 'Phalangid'. Slide shows simple diagram of 'Fig. 232. - Nervous and respiratory systems of a Phalangid'. Descriptive labels coresponding to numbers on diagram include, 'Nerves black, tracheae white. c.g, Cerebral ganglion; g' g" g'", ganglia supplying viscera; m.n, median abdominal nerve; oe, passage for oesophagus; st, stigma; th.g, thoracic ganglion; tr, main trunk of tracheae'. Late 19th - early 20th century