FiTCHETT. — Physiol oy teal Action of Tuhn. 355. 



Exp. 136. 



In this experiment, the nerve of the one preparation (A) was i>laced in tiitin sohi 

 tion (0-5 per cent.), and the muscle of the other (B) in the same. Before ])Iacing 

 in tutin solution, A contracts at 28 cm., and B at 34 cm. 



P.M. 



6.3. Tutin solution ajiplied as above. 

 A. B. 



6.6. Contracts at 31-5 cm. 28-5 cm. 

 6.17. „ 30-5 cm. 30 cm. 



7.22. „ 33 cm. 27-5 cm. 



Exp. 137. 



One muscle in saline (B) and one in a 0-05-per-cent. solution tutin (A). Nerves 

 exposed to air, and kept moist. Stimulated as before. Before tutin applied. 

 A contracts at 30-5 cm., and B at 25-5 cm. 



Same as previous experiment. Before tutin (interrupted current), A contracts 

 at 36 cm., and B at 32 cm. ; single shocks, A contracts at 27 cm., and B at 

 25-5 cm. 



A.M. 



10-56. A placed in a 0-05-per-cent. solution tutin in normal saline. B left in saline. 



Exp. 139. 

 Rabbit (young). Weight, 804 grams. 

 Blood-films were taken, dried in the air, and fixed with Jenner's stain ; and next 

 A.M. morning at — 



11.36^. Gave 25 minims of a 0-5-per-cent. solution tutin (lOmlgm. per kilo), hypoder- 



mically. 

 11-56. Shaking-movements of head ; pvipils normal. 



11.58. Shaking and rocking of whole body ; lying prone on belly. 



11.59. Twitching of ears. 



P.M. 



12.0. Twitching of hind limbs and then of fore limbs. 



12.1^. Severe convulsions; kicking-movements ; head drawn back; clawing-move- 

 ments ; convulsions lasted 2 minutes ; pupils did not dilate ; cornea damaged 

 by rubbing open eye on floor in convulsion. 

 12.3^. Lying on side, with head bent back ; hind and fore limbs show running-move- 

 ments. 

 Clonic convulsion. 



Convulsion passed, but running-movements of legs continue. 

 Clonic convulsion. 



Convulsion passed ; running-movements continue ; head bent well back. 

 Convulsive movements of jaw and ears, gradually merging into a general con- 

 vulsion. 

 Momentary quiescence. 



Jaw and limb movements continue. The lower jaw is pushed forwards, and 

 then clenched so that lower incisors lie outside upper incisors, then they slip 

 inside the upper incisors with a grating sound. 

 12.22. Movements still continue ; no cry has been uttered by the animal as yet ; respir- 

 atory movements are not much in evidence ; movement of limbs, jaw, and 

 retraction of head most prominent. 



