[ 826 ] 



Weight of glass 4- clip + raw bone =28-42875 

 glass + clip alone =25-42875 



.*. Weight of raw bone taken =3 grammes 



Weight of glass + clip + raw bone =28-42875 

 dry bone =28-11000 



/. Weight of moisture lost ... = -31875 in 3 grammes 



/. in i gramme the loss is ... = -10625 grammes (I) 



/. the weight of organic matter alone = '37775 '10625 



= '2715 grammes (II) 



Sand. 



Weight of crucible + sand ... =29-39625 



Weight of crucible alone ... =29-33575 



Difference = "0605 

 Deducting weight of paper ash ... = -0020 



Weight of sand '" = '0585 grammes (III) 



Phosphates. 



Weight of phosphates + crucible.,. =29-69450 

 Weight of crucible alone ... =99'335 2 5 



Difference = '35925 

 Deducting weight of paper ash ... = -00200 



Weight of phosphates ... = -35725 grammes 



Weight of crucible -i- 2nd precipitate 



of phosphates ... ... =29-39600 



Weight of crucible alone ... = 29-33525 



Difference = -06075 grammes 

 Deducting weight of paper ash ... = -0200 



Weight of the 2nd precipitate ... = '05175 



Total weight of the two phosphate 



precipitates... =*35725 + 'o5875= -416 grammes (IV) 



