64 REportT OF THE First ASSISTANT OF THE 
were laying, mostly from the larger content of nitrogen, The 
manure from Pen 8 analyzed as follows : 


Dry Fresh 
manure. | manure. 
Per cont ammonia (N H,)....... igh Weg CO Sab aig Sew) TRE aD Daa hata a 47. 4.33 atures 
Per cent phosphoric acid tis Oi yases on dcaederseccpepectincescr aces cn pile 2.66 .93 
Per cent potash (K, O)...............0085 aie ote Cutuiatch aye wedenes teal te 1.02 36 

If this sample lost the same amount of ammonia in drying as 
did the others (42.6 per cent), then instead of 1.51 per cent of 
ammonia in the fresh manure there would be 2.63 per cent. The — 
commercial value of the fresh manure would be $11.91 per ton, 
and the average value per fowl at the rate of twenty-six cents 
“a year. 
During one period of the experiments of 1888, the following 
result was obtained from a few fowls: 
——_——, 


Ratio of ash | Average per 
in feed to | cont of non-| Average par 
total water-| volatile ash to fresh ege. 

free food. in egg. 
af Ee tbs aed I Ay AICPA MO ae SC AND SE A 1:27.0 1.45 10.78 
Bc ORT ge SS iam SAA A Pelalicle ys awit aren aie cuasarecelaiure won 1:51.1 74 10.86 


“The amount of ash in the feed of No. 4 and the per cent of ash - 
in the eggs were less than for No. 3. Yet, although the number of 
eggs was more than three times as great as from No. 3, the per 
cent of shell was practically the same (slightly higher). The car- 
bonate of lime in the shells of eggs from Pen 4 (ninety per cent 
CaCO, in the shell) was 206.1 grammes average per fowl. The 
amount of lime, calculated to carbonate of lime, in the ash of the 
feed was, during the same time, only 11.3 grammes per.fowl. It — 
would appear from this result that the source from which the 
fowls obtained material for the egg shell was independent of that 
which furnished the ash constituents of the egg itself.” In con- 
nection with this result similar lots of fowls, fed the same grain 
and vegetable ration, were given—those of one pen all the 
ground oyster shells they would eat, and of the other all 
the ground bone. Partial analyses of the dried shells and of the 
ash of the egg were made, after the feeding had been continued __ 
for afew months. The greater amount of phosphoric acid in the | 
ground bone did not appear to make much difference in the com- _ 
