r//^ 



460 



THE BEGINNINGS OF LIFE. 



a whitish deposit as a result of this. After a few weeks 



many 



cloudlike masses became visible in the 



fluids dotted here and there with minute whitish spots^ 

 but no pellicle made its appearance on the surface. 

 The flask was opened at the end of the fifteenth week^ 

 no apparent change having taken place. On micro- 

 scopical examination the flakes were found to have a 



very minutely granular composition^ and the whitish 



spots on them consisted of aggregations of minute 



linear crystals^ about 



// 



20000 



in length. The deposit 



was composed of amorphous particles and spherules^ but 

 there was no trace of the existence of living things ^. 



'Experiment v. A solution of eight grains of ammonic 



carbonate and three grains of sodic phosphate in one 

 ounce of distilled water. 



When taken from the digester the glass was not in 

 the least corroded. The tube was opened at the ex- 

 piration of eight weeks^ when the vacuum was found 



of whitish deposit at the bottom and sides of the tube, 

 though there never had been any trace of scum on the 



w 



surface. When examined microscopically the deposit 

 was found to be composed of more or less rounded 

 refractive particles, imbedded in a homogeneous colour- 

 less matrix. There were also very many motionless rod- 



1 This tube was one of English glass. The quality of the solution 

 must have been altogether altered by the corrosion— a great part, if 

 not the whole, of the phosphoric acid being precipitated in the form 

 of insoluble phosphate of lead. 



of ammo 



'^e fluid was a 

 •nthet^ventie 



Jffl the latter f 



jktoess; and 



The 



larance, 



4^ 



apparent turbi( 

 I'lrhitish deposi 

 He iask was 

 ion of the fli 



a submitted t( 

 ■4e pellicle 



wc 



to be well preserved. There was a very small amount ijilar^ and hig^ 



^parent jell) 



varied i 



in <: 



A d 



^y branched 



■^1.11 



'f.i} 



f ^^e fron 



^iion 



) 



^iti 



there 



y. 



'■41) 



We 



rabl 



b,Of 



"^tole 



c 



a 



^uar 



