
188 
Tegan OF THE ‘Fnsr ASSISTANT OF THE 
Lor 2— Grass — Seconp Prerrop — Ten Days — Aprit TWwENTY- 
THIRD TO May THirp. 


























: lent 
Total |Water-free| 4 5) infoog| Calcium ape Aa ioe 
cages consumed. consumed|OUsumed | in food, | Carbonate, 
: ; Byavimess Grammes. | Grammes. | Grammes. | Grammes, 
Mixed grain. 2.) 2.0% 022.3 | 278.1 11.40 42 1.04 
Wheaties eee 460.7 | 401.3 8.55 . 20 .50 
Cabbage” sss. ss ceeie 283.5 | 26.9 1.87 .08 .19 
Boiled eggs.......... 326.0 | 93.2 3.42 28 70 
Watery ou cee Soe ee 12760.0 4.57 3.66 .85 2.13 
Total, except glass 1392.5*| 799.5* | 28.90 1.83 4.56 
Sot a ae DOR REC fe ae ey eases | ee 38.56 
PRODUCTS. epee ce! pee tl Ash. | Calcium. ‘orGaGO 
| 
j | Grammes. | Grammes. | Grammes, | Grammes. Grammes. 
Figgs (entire)......... | UP) ee Paneer es ae MER Re Like 
Shella th biviniay ahs eee ere DOA seine eae eee 7.39 
Lining membranes ....| ...... 5 ib 1 Bree 01 
Eggs (whole interior)... Ta ries uses | 147. 06 14 
| 



It will be seen that the amount of lime calculated as carbonate, 
found in the eggs, exceeded that in the food and drinking water by 
3.9 grammes for one period, and nearly three grammes for the 
other. 
While the glass taken during one period contained lime the equiva- 
lent of 116.63 grammes of carbonate and during the other of 38.56 
grammes, it does not appear probable that any of this was available 
as ege-shell material for it existed in combination with various 
insoluble silicates. Treatment of the finely powdered glass with the 
ordinary acids failed to dissolve a trace of lime, and fusion with 
alkaline carbonates was necessary to its estimation. Upon exami- 
nation of the excrement, of which during the first period over 
seventy-two per cent of the air dried substance consisted of 
fragments of glass large enough to be easily removed by wash- 
ing, a very few small rounded fragments of limestone were 
found which must have been swallowed by the hens previous 

* Exclusive of drinking water. 

