CUTANEOUS SENSATIONS. 

 BY C. S. SHERRINGTON. 



CONTENTS : THE SENSE OF TOUCH, p. 921 Touch-Spots, p. 921 The Adequate 

 Stimulus, p. 924 Weber's Law in respect to Tactual Sensations, p. 928 The 

 Spatial Quality of Touch, p. 934 Theory of "Localising" Power of Touch, 



L938 Projection of Touch, p. 941 Illusions in Tactual Judgments, p. 943 

 action Time for Touch, p. 945 THE SENSE OF TEMPERATURE, p. 945 

 "Cold" and "Warmth" as Distinct Species of Sense, p. 945 Distribution 

 of Apparatus for Thermal Sensations in the Skin, etc., p. 946 The Adequate 

 Stimulus, p. 950 Other Stimuli, p. 954 Paradoxical Sensation of Cold, p. 

 954_Some Characters of "Cold" and "Warmth" Sensations, p. 955 Rela- 

 tion of Thermal Sensation to Pain, p. 955 Influence of Areal Extent of 

 Stimulus upon Intensity, p. 956 The Physiological " Zero-temperature " and 

 "Adaptation," p.. 957 The Degree of Projection of Thermal Sensation, 



E. 958 The Thermal Sense in relation to Thermotaxis, p. 959 The 

 iminal Difference of Intensity of Stimulus, p. 959 Reaction Time, p. 962 

 Antagonism of Sensations of "Cold" and "Warmth," p. 965 Paths of 

 Conduction, p. 965 COMMON SENSATION, p. 965 Cutaneous Pains considered 

 in relation to Pain in general, p. 966 Relation of Pain to Intensity of 

 Reaction, p. 966 Quality of Cutaneous Pain, p. 967 Scope of the term 

 "Common Sensation," p/969 The Viscera and Common Sensation, p. 970 

 The Musculo-articular Apparatus and Common Sensation, p. 972 Nature of 

 "Physical Pain," p. 973 Action of Painful Stimuli, p. 974 Character of the 

 Motor Reactions provoked, p. 974 The Central Neural Mechanism for 

 Cutaneous Pain, p. 976 Tickling, p. 976 Dolorous Reflexes compared with 

 Tactual, p. 977 The Spinal Path of Pain, p. 977 Associated (Referred) Pains, 

 p. 981 Interference of Pain with other Sensations, p. 984 The Peripheral 

 Path of Pain, p. 984" Pain-Spots " in the Skin, p. 984 Pain and Nerves of 

 Muscular Sense, p. 989 Pain and Visceral Nerves, p. 990 Hunger as a type 

 of Visceral Sensation, p. 991 Evolution of Visceral Pain, p. 993 Cutaneous 

 Pain and Adequate Stimuli, p. 994 Specific End-organs or Undifferentiated 

 Endings, p. 995 The Forms of "Excess" of Stimulus, p. 997 Summation 

 in Production of Pain, p. 998 " Inertia " of the Neural Apparatus of Pain, 

 p. 998 The Brain and Physical Pain, p. 1000. 



Sense spots. The surface of the skin is found to be a mosaic of tiny 

 sensorial areas. The elements of this mosaic are set not actually edge 

 against edge as in the retina ; between each element and its neighbours of 

 like function extends a relatively wide interval, insentient when examined 

 by stimuli of little above liminal intensity (Blix). 1 The more locally 

 limited and the nearer to minimal the stimuli, the smaller appears 

 each individual sensifacient field; ultimately, by carrying the tests to 



J Ztschr.f. Biol., 1885. Bd. xxi. S. 152. Also Goldscheider, Monatsh. /. prakt. Dermal., 

 Hamburg u. Leipzig, 1884, Nos. 7-10; Arch. f. PhysioL, Leipzig, 1885, Suppl. ; Arch. 

 /. Psychiat., Berlin, 1887. Bd. xviii. S. 659; and Eulenburg's " Real-Encyclop. d. ges. 

 Heilkunde," 3te Aufl., art. " Empfindung." 



