OVULATION AND EGG TRANSPORT 



115 



It is recommended that the student remove parts of the brain anlage at stage 

 #21 (Amblystoma), allow the larva to develop to stage #39 or later and de- 

 termine the locomotor capacity as compared with the controls, using the 

 figure on the following page. The operation should be performed in 0. 5% 

 sodium sulfadiazine (Detwiler and Robinson, 1945). The Syracuse dish in 

 which is placed a glass ring, providing a "moat" for the swimming larva, 

 can be placed directly over the figure below and readings of the distance 

 moved can be recorded in sectors. Ablation experiments are qualitative in 

 that no two operated larvae could possibly be identical. Sketches of the ex- 

 cision and later larva should be made. 



REFERENCES 



COGHILL, G. E. , 1929 - "Anatomy and the problem of behavior. " Cambridge. Univ. Press. 



COGHILL, G. E. , 1936 - "Correlated anatomical and physiological studies of the growth of the nervous system in Amphibia. 



XII. Quantitative relations of the spinal cord and ganglia correlated writh the development of reflexes of the leg in Ambly- 

 stoma punctatum . " Jour. Comp. Neur. 64:135. 

 DETWILER, S. R. , 1936 - "Neuroembryology. " Macmillan. 

 DETWILER, S. R. , 1947 - "Quantitative studies on the locomotor capacity of lan'ol Amblystoma lacking Mauthner's neuron or 



the ear. " Jour. Exp. Zool. 104:343. 

 DuSHANE, G. P. G C. HUTCHINSON, 1941 - "The effect of temperature on the development of form and behavior in Amphibian 



embryos. " Jour. Exp. Zool. 87:245. 

 FABER, J. , 1936 - "The development and coordination of larval limb movements in Triturus taeniatus and Amblystoma Mexicanum" 



Arch. Ne'erl.de Zool. 11:498. 

 HARRISON, R. G. , 1904 - "An experimental study of the relation of the nervous system to the developing musculature in the 



embryo of the frog. " Am. Jour. Anat. 3:197. 

 HARRISON, R. G., 1908 - "Embryonic transplantation and the development of the nervous system. " Anat. Rec. 2:385. 

 HERRICK, C . J. , 1939 - "Internal structure of the thalamus and midbrain of early feeding larvae of Amblystoma. " Jour. Comp. 



Neur. 70:89. 

 HOOKER, D. , 1952 - "The prenatal origin of behaviour. " Univ. Kansas Press. 

 KARCZMAR, A. G. G T. KOPPANYI, 1947 - "The effect of stimulant drugs on overt behavior. " Anat. Rec. 99: Art. #139. 



(See also Art. #138.) 

 MATHEWS, S. A., S. R. DETWILER, 1926 - "The reactions of Amblystoma embryos following prolonged treatment with 



chloretone." Jour. Exp. Zool. 45:279. 

 WINDLE. W. F. , 1936 - "The genesis of somatic behavior in mammalian embryos. " Jour. Physiol. 87:31. 

 YOUNGSTROM, K. A., 1938 -"Studies on the developing behavior of Anura. " Jour. Comp. Neur. 68:351. (See also Jour. 



Neurophysiology 1938, 1:357) 



