rpS 



THE BEGINNINGS OF LIFE. 



midst of its body-substance are said to come together 



/ 



Fig. II, 



I - 1 



g n — 



J 



Formation of reproductive units in Amoeba, (Nicolet.) 



r 



a. Atnceba princeps (Ehr.) containing refractive granules and particles in 



its interior. 



b, c, d. Different stages in aggregation of granules. 



e,f,g, h. Showing gradual concentration and increase in size of reoro- 



ductive mass, with corresponding diminution and contraction of 



-\ 



surrounding substance. 



here and there so as to form much larger refractive 

 particles. These latter unite again to form still larger 

 ijiasses, and ultimately, after several steps of this kind, 



prolonged observation^ the 



single mass 



only to be followed 

 different granule heaps collect into a 

 which, at first, is irregular and mamillated, but gradually 

 becomes smooth and assumes an ovoid or spherical 

 form. According to Nicolet^ the contractile body-sub- 

 stance of the animal diminishes and becomes more 



_ X 



transparent in direct proportion to the increase in size 



of this central 



agsiregation of granules. 



ob'^-t) 



The move- 



ments of the Amoebaj also, become slower- it remains 







'Oiirs 



When *' 



portions '»" 

 *s Then, afte 



the 



a 



i lightning. 



shootin 



0- 



oc 



cupied my 



out aro 

 /•riad 



a tliread-lik 



Hter and closel] 



In the great 



germs ari; 



ilind extremity 



of the St 



an ovary, 



1" 'ovisac' or 

 amples of the 



with 



throi 



■«»S from one' 

 , ^"* ^° detach 



¥ditj, Tu 



»Il„jHsor 



> 



' ^ M« 



