XXXIX.] 



CARBONISING. 



325 



the broken pieces of Nos. 4, 5, 6, 7, 8, and 9 were again 

 placed in the box of manure. 



The weight of the specimens, taken on five occasions 

 in nine years, was as follows : 



TABLE CLXVIII. 



Nos. ii and 12 were left in the ground in 1863, 

 but No. ii was missing in 1867. Nos. I, 2, 3, 10, and 

 12 were lost at the closing of the dockyard in 1869, 

 but the broken pieces in the box of manure were safe, 

 and these I kept until the yard was completely cleared 

 of all its stores in 1871. At that time their condition 

 was as follows : 



No. 4. Both pieces were considerably wasted. 



No. 5. One piece much wasted, the other less so. 



No. 6. Neither piece much wasted. 



No. 7. Both pieces much wasted. 



No. 8. On one piece some carbon remained ; the 

 other was much wasted. 



No. 9. Ditto ditto. 



