26 



BULLETIN 1115^ U. S. DEPARTMENT OF AGEICULTUEE. 



zo 



^6.0 



^ AC 



O 









^^©-0— 



»©-- 



^.- 



.©.. 



u 





-«* 



coz ^ 



.0^" 

















^ 





































6V 



P-^^ 







-€>— 



-e— 







_^ 



u^ 



.Assp^ 



»» 













^ 

















/A 



o 



Fig. 48.— Average results with AS-3, BS-3, CS-3, FS-3, IS-3 (paper-lined sugar barrels). 



All of the sugar barrels were in bad condition at the end of the test 

 because of handling incident to sampling. The results of the tests 

 show the unfitness of this type of container as a package for com- 

 mercial purposes. 



It is plainly shown that the containers are rated in the same order 

 by both the carbon dioxid and the water-soluble arsenic oxid results. 

 The metal drums show no change and the sugar barrels show the 

 most rapid change, the other two being intermediate. Little dif- 

 ference between the lined and unlmed containers of the same type 

 is observed. The calcium arsenate stored m the sugar barrels 

 apparently reached equilibrium in most cases in approximately 

 eight months. No seasonal variation in the rate of change is 

 apparent. 



Very little information concerning the effect of locality was ol:)- 

 tained. Strictly comparable results were possible only with samples 

 ASN and ATj and samples KW and HT. In both cases the rate of 

 absorption of carbon dioxid was higher at Tallulah than at Wash- 

 ington. The authors are not in a position to state whether or not 

 this was due to a higher carbon dioxid content in the air at Tallulah 

 or to some other condition. 



6.0 



































fJ^-^^ 



si 





•<■ 



COS 



..,,r!»'®' 



&»&" 



"^- 



»\j;>^ — 





^a 



sr©-^ 































u 









BH*"*® 



SHr^ 



tv.s. 



A^O=r 



_^ 







iatsm 



B^"© 









r^S o 







0.4- X 



0.2 ^ 



O 



Fig. 49.— Average results mth AS-4, BS-4, CS-4, rs-4, HS-4, IS-4 (hardwood barrels). 



