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(int Pwder. The use of giant powder iii blowiug up the ice on the river in tliis city, imys the Rochester (N. Y. ) Bxpreas, has at fcracted considerable attention to tliis dangerously powerful explosivo, as many ax-e anxious about its composition and qualities. lts proper name ík Dynamite, bnt it is better known in tliis country as Giant Powder. No. 1 eontains 75 per cent. of nitro-glycerine, 24 per cent. of infusorial earth. No. 2 lia-s mnch loss of nitroglycerine, and the deöciency ia supplied by niter, saltpeter and rosin. It ioóka lik.-, dirty corn inefel, and gives no sign to the eye of the resistless power it contains. It doe not explode like gunpowder, but the entire mass, however large, burste at once, as if' eacli recoil of eaon giain töök phice at the same instaut. It shatters the hardest rock as if it were the '.nost fragüe of things, and renda ivrought iron and Rtel a.s if they were raga. The lightest charge of it in the heaviest rifle or ordnanee, tnurs the i gun into n tnouernd piéoes. It isas good in water a out. The only practicable means of exploding it is ty a large and i powerfnl percussion cap. Strange to say nre and heat will not explode it ; it can be poured on a red hot piate, or a red hot poker can be thrust into it and it will not explode ; or it can be thrown from iny height upon rocks until the j boxes are broken, and it will not explode. The secret of its safety lir.s in the fact tliat the absorbent in soft, oompresaible and clastic, whereby the powder beeomes ; a cushsion on whicli all blows are defended. Henee the greater the quality, the greater the safety. AVliat 'the. Word " Beo Means. The term "bee," aam so generally applied to spelling classes, has lor a eëptury or more beeft nsed in connection "Witli quiHings, ooru-haskiagB, apple-batter boilings, and othei plcus.uit gathcrings j of country poople, wtee the hum of busy industry reminded or," of the activity of a bee-hiv(-. When the quilt waa eómpleted, or the corn all husked, the young people generally amused j Belvee with dancáeg, playiug games, etc, and, moBg other pleasani ameemönts, spejliug classes were introduced. To these olil fashioncd country oustonjfl may, we think, be traced tho origin of the term " bee " in its appJicatipn tg orthogrphic contestsi I