SAP-STAIN, MOLD, AISTD DECAY IN GREEK WOOD, 



43 



which was observed on the same spokes at the time of loading. For 

 convenience in presentation, the data relative to location in the car 

 and condition are p^iven in Table I. 



Table I. — Condition of the red-oak spokes in car No. 1 upon arrival at its 



destination. 



Location in car.o 



Antiseptic. 



Condition. 



Percent- 

 age 



molded 



(based on 



833 



spokes 



per rick). 



Forward end of the car: 

 Loose in the door- 



Untreated... 



Free from mold or sap-stain; a few badly 



checked. 

 None with mold or sap-stain; not so many 



checked as in the untreated lot. 



None with mold; no sap-stain 





way. 

 Stacked in the door- 



Mercuric chlorid and 

 hydrochloric acid. 



Hot creosote at 150° to 

 155° F. 

 -do 





way and first 

 rick. 

 First rick 





Second rick . 



68 with mold; no sap-stain. . 



8.2 



Third rick . . . 



.do . . 



431 with mold; nosap-stain. .. 



51. 7 



Fourth rick 



-do.. . 



277 with mold; no sap-stain. . . 



3-3.2 



Fifth rick 



do 



218 with mold; no sap-stain. 



26.2 



Sixth rick (end of 



do 



222 with mold; nosap-stain 



26. 7 



the car). 

 Opposite end of the car : 

 Stacked in tlie door- 



Cold creosote at 80° to 



90° F. 

 do 





8.3 



way and first rick. 





59. 1 





do 



348 with mold; nosap-stain 



41.8 



Fourth rick 



.do 



207 with mold; no sap-stain 



24.8 



Fifth rick (end of 

 the car). 



-do. .. 



142 with mold; no sap-stain. . . 



17.0 









a Ricks are in each case numbered from the first transverse rick on either side of the area between the 

 doors and extending back to the ends of the car. 



It will be seen from Table I that the spokes that were placed in the 

 doorway where better ventilation could be had did not mold or 

 sap-stain. Those that were the most exposed, however, were inclined 

 to suffer from checking. The largest proportion of molding took 

 place in the second or third ricks, but in no case was this accompanied 

 by sap-stain, and in no instance was it severe enough to necessitate 

 culling. The considerable reduction in the fourth and fifth ricks, 

 which was most marked in the rear end of the car, is difficult to ex- 

 plain. In the forward end, the motion of the train caused the last 

 rick to slide away from the end of the car, and thus somewhat im- 

 proved the ventilation. It is possible, then, that in the rear end the 

 tendency of the mass of spokes to surge backward and forward when- 

 ever the continuous passage of the car was interrupted, together with 

 the fact that a hole existed in the bottom of the car due to the breaking 

 of a floor plank, may have provided sufficient ventilation to account 

 for the low percentage of mold in the fourth and fifth ricks. 



It was noted that the stage in the development of the mold on the 

 creosoted material was an early one, namely, a white, fluffy mycelium, 

 which in most cases had not advanced to the spore-producing condi- 

 tion. This indicates a retarding effect due to the treatment. It is 



