THE ORIGIN OF THE I N DIVIDUAL. 1 ' 



ON THE IMITATION OF PROTOPLASM 



PROF. A. L. HEREERA, M. S, A., 

 Chief of the Commission of Parasitology. 



[PLATE I]. 



Biitselili began the study of these subjects by preparing 

 his artificial protoplasm with carbonate of potassium and oil, 

 or oil and sugar. He obtained in this way amaeboid move- 

 ments, vacuols and alveolar structure. Since the year 1897 I 

 have been making methodical researches on this subject. I ha- 

 ve accepted and rejected many theories successively and have 

 avoided all prejudice. I have obtained several imitations of 

 protoplasm in the following ways: 



1," Mixture of compounds, after Reinke's analysis. Cur- 

 ■(_ rents of diffusion without structure or 'evolutions. 



2. d Mixture of albumen of egg with oils; saponification 

 of the alcali, vacuoles, general appearance of protoplasm, no 

 movements or evolutions. Lime water, albumen and oil affords 

 a reticulum and granulations very interesting. The same with 

 peptone, lime soap and albumen. 



3. d Myelin of egg, brain, snail, or vegetables gives many 



[1] See "Memorias de la Sociedad Alzate." L'origine des individus. 1809-1900. vol. 

 XIV, p. 129. 



