Prof. W. Preyer on Anabiosis, 503 



2. Tropidurus hivittatus. 



Zei'oeeplialus Grayi, part., Bell, I. c. 



Craniopellis livittata, Peters, Mon. Berl. Ac. 1871, p. 645. 

 Tropidurus Grayi, part., Steiud. /. c. ; Bouleiif^. /. c. 

 Tropidunis kmniscaius, Cope, Proc. U. S. Nat. Miiy. xii. p. 145 (1889) ; 

 Baur, I. c. 



1. Darwin's specimen, probably from Cliatham Island. 

 c?. So. 65. 



2. Ditto. Young. Sc. 57. 



3. Tropidurus pacijicus. 



Tropidurus pacifims, Steind. /. c. p. 313, pi. ii. figs. 2 and 3 ; Bouleng. 



I. c. p. 173. 

 Tropidurus abingdoniif Baur, /. c. 



1. Abingdon Island, Commander Gooksoti. ^ . So. 91. 



2. Ditto, c? . So. 95. 



LIX. — On Anabiosis. By Prof. W. Peeyer, of Berlin*. 



The fact of anabiosis, i. e. the revivification of perfectly 

 lifeless organisms and their parts, the condition of which 

 differs from ordinary apparent death in the total suspension 

 of the whole of the vital processes, was experimentally esta- 

 blished by me more than twenty-five years ago ; and since 

 that time I have substantiated it in my lectures and various 

 papers, and have also drawn attention to its great theoretical 

 importance f- I attach especial weight to the proof which I 

 have furnished of the difference between the two antitheses of 

 life, namely : — 



i. Lifeless and capable of living = anabiotic. 

 ii. Lifeless and incapable of living = dead. 



* Translated from the ' Biologisches Centralblatt,' r»d. xi. no. 1, Feb. 1, 

 1891, pp. 1-5. 



t ' Ber Kampf urn das Dasein,' Bonn, 18()0 (pp. 10, 39) ; ' Die Erlbrsch- 

 unpc des Lebens,' Jena, 1873 (and 'Tageblatt der 45. Versanimlung 



Leipzig, IHWa. if. " Ueber den L.eben.-^bej'nii in llie journal ' ivosnios' 

 (i. .Tahrg. ii. Bd. p. 213, Leipzijr, 1878), and " Die Wifdcrbelobung toten- 

 starrer MuHkeln" (Aintl. Hericlit iibt-r die 39. Verrianiinlung deutscher 

 Naturforscher uiid Aeitze in G lessen, 1804, and ' llecueil des travaux do 

 la SocidttS mt^dicale .allemande,' Paris, 18G5). 



34* 



