14 



The use of buttermilk in this machine, so far, is not as satisfactory, 

 especially from the vitality view. 



The Peerless Incubator. « 



The introduction of moisture in this machine appears to have been 

 beneficial, there being- a higher hatch and fewer fully formed chicks dead 

 in the shell from the eggs set May nth than from another hatch. The 

 hatch following the one in which moisture was freely used, the evaporation 

 is not as great as in those ran earlier in the season. This, I believe, is 

 due, as in the case of the Model Incubator, to the absorption of water 

 by the interior surface of the hatching chamber and the evaporation of 

 the same in the hatch following. 



When the machine was washed with zenoleum the chicks were good 

 healthy fellows. 



Buttermilk used as moisture gave very good results. 



The vitality was lowest early in the season. 



I have no comments to make on any of the machines on this table 

 except the Hearson. The others have not been used a sufficient length of 

 time, and the results so far are very plain in the table. 



The Hearson has some up-draft ventilation — not unlike a hen. This 

 may account for its hatching better chickens on the average than any 

 other make. 



The use of buttermilk appeared to help the vitality when the machine 

 gave evidence of hatching inferior chicks. 



Moisture was used in all hatches, so we cannot say what it would 

 do if run dry. 



No record is given of the Chatham incubator. These machines were 

 used largely in the 1906 experiments, and to a somewhat limited extent 

 during the 1907 experiments. They usually worked well as compared to 

 other makes. 



