This report his clniiiis to (list inct ion :ipnrt from :iny iiilicritctl froin its 13 I)rctlccwsors. Jii two roniniiiiiic:it ions, occiipying rat licr iiiore t liiiii Iidf tlic tclst: J h . J . Xcivton Friend tlescri1)cs the f i l i i i l rcsidts yieltlctl liy the csiiniin:it ion of viirioirs iron nnd steel tcst-hrs iiftcr 10 yatrs' csliosiire liotli to scii-wiitcr iiiid scii-iiir i i t l'lpiouth i i n t l C'oloiiibo ; fur coinpiirisoli, UlJ.stTVilt ioJlS ii r t b iriclnclctl froiii sirtiiliir Imrs :it Xuc-kliintl i i n c l 1 liilifiis. ..\ previous coliipletc scrips \viis rc:llio.(d :it 5 p i i r s , iilitl the. rciiiuiniiig swics will be rciiiovcrl iit 15 yciirs ; nicwiiwhile, in view of t lie iniptirtiiiicc tliiit iittiichcs tu tests cstcnrling over so long :I Iwriod, it is siitisfiictory tliiit subst iiiit iiil ;igreeniriit is rccortlctl Iictxvccn tliv ti-yeiir ;iiid IU-yciir results. Consitlcriiig tlic cstrcliic! eoniplesity of the couditions it i R to be espcctt.cI that iuterpretiit ion will sonietiines be diflicult, iiii(1 that prolilerus iirisiilg iiiiiy oiitiiiinrbcr t.hosc disposed of. Xcwrthelcss, tlehiitc conclusioiis h a w bec!li rcaclicd ou such uiilttcrs iis influenet! of cliiniite, of sea& :is couipcired wit ti scii-\viitcr, of sliclly fiiunic, of mill-scdc, ctc. ; outstiiiicliihg results likcwisc. emerge froiii tlic coiqxirison of t Iic viirious iiiiitcri& :