'Antonio Álzate." 25 



quantity of water a kind o£ microscopieal snakes iii move- 

 ment(F¡g. 66-71) and manycells endowed with a great power 

 of contraction and extensión, according the osmotical pressu- 

 re, appears. Tbey have probably an alveolar structure. 



8. A small quantity of amerícan peptone (with álcali) 

 and oleie acid shows an amaeboid or fiagellated form, immo- 

 vable, but if a fresh quantity of acid is added, it becomes a 

 mass of Bütschíi (oil audsugar) or an interesting imitation of 

 the structure of protoplasm, witk granulations aud circles, 

 as in the drawings of Kunstler. (Fig. 73-76 ) 



9. Oleic acid eombined with common caustic soda or the 

 same in alcohoUe solution added with ammonia and water, 

 presen<s sometiines the appearance of a colony of Bacferium 

 termo, every crystal of carbonate or every particle being in vol- 

 ved with a pellicle of oléate. (Fig. 52.) 



10. A particle of caustic soda added with water and ca- 

 prinic acid produces a disk with small holes, as in Foramiui- 

 fera, many articulated Unes or dendriticals and several imita- 

 tions of BacterioL (Figs. 49, 50, 51 and 77.) 



11. The potassium oléate shows in a drop of water many 

 pseudopodia which stretch and eontract as in Vortkdla, and 

 also an imitation of the tufts of núcleo! us. (Figs. 6 and 7.) 



12. Vapórs of ammonia reaching a drop of oleic acid in 

 water afiFords many little drops turning in every direction. 



13. By macerating oléate of ammonia in a small quantity 

 of water or Pfeffer solution the following is obtained; 



2} day. Many tubes floating and f orming a kind of textu- 

 re. (Fig. 163.) By adding water there appear microscopieal 

 snakes knotting and untying themselves. (Fig. 152-161.) 



Also a vesicle with deformations by rupture, heavy and 

 transparent. 



3* day. A mass of transparent drops, one or two of them 

 extendí ng in the water and acquiring ramifications or growing, 

 moving and contraeting as a worin (Limnodrilus) and resting 



Memoria». (ÍSOO-IÍWII.— T. XV.— 4. 



