Show fr m dorious No rious sc afi a fl agriculture Agi ag cultura culture substances which constitute tho the inn inorganic part fart of plants ne lue suL aut stances hitherto described have all ben hose hase that are found quite abundantly but bi t att v aich ia now to be mentioned the OL 01 manganese is more rare many specie species of 0 r plants are found tobe to be without it in hir her ash far more often than with it and vr V a j it is present in the soil we cannot fro arora r a icv dif DIV experiment hitherto amz ade aae seq sea beo seo that their thel r g ow 0 w h is more luxuriant in 10 some trees it ia is said to ex si d antly nl bee bel b foi the ash of our ed cops crops c ops genera y I 1 am inclined to think that it can scarcely hp h considered an indispensable constituent a metal somewhat resembling iron bit much less abundant it also Is a vr 9 found in me ivae compound form never AS ap apoi metal it fm flims oxygen alid one of thebe these the be bick bluck oxide is of much value ia in ceran cera a n manefa t i in ing processes for these purposes it is mined whenever it is found in lare quantity this bleek black oxide rn ir easily beo be 0 i ined laed aud and shown to a class AS lv av used in some bome mar 1 ir a 8 a cheap z f icle s i a is a si alaire qt aice alce that exis a abundant abunda nf ny y in arnost almost all rii ril gi pil i ts 3 often forming more than h b f at vf the w whre ie ash aih we see a nearly pare fj fx m bof of it in tap comma quartz qi artz crystals or correlian cwi an or fiat these all consist almost en r ay of bilk silk specimens of silica in in some fr ft in kiy muy m ly be I 1 0 i in almost every neighborhood aa as it is is 0 e of the most common mineral minerals wh lahn n perfectly 0 ire it is a very hard bard whit while e substance ance tae tai fe eest pest and quite difficult to lat la t tb th fgiera fie fi iera gra a in n ordinary sandstones sandston rs are p ieso tsila it is is not dissolved in in water and nd even stron strong c ds cs produce produce little h jo effect how bow si 81 eol eal ar ihen then th t it s should ou id be found so abunda t t V y in the int por or of plants L lh h erk erne ne is 13 a I 1 nd n d of gas it is is easily pre po pia 1 mix g a little m hatic batic acid with si me odthe of the cor con mercial blacic black oxide of mang ne PI 4 a ge rele gele e heat beat beitf belli then applied chinte chinie ir las ovon sven eiven elven c aff ff and is conducted coi col ducted into re cevet covet s in n the manner beffre described under oxy axy eik oil n and badre hydrogen en water when cold a aa sit s it langpy larg py and nd therefore the water in rhe the rh receptacle where the gas paa is is collected shou J be hot it is however so much heavier th n common ar a r that it may be collected in s aai aaa genf quantity by calr cair dairying cai cal ying the conduct conducting ii cuip to the he bottom of a jar aror or bottle bottie al the top being partial partially covered so as to pret tnt nt it too free access of air and co consequent ait uit a jt tinn tion the vessel can be filled with chlorine aa as readily as with water if the glass ia is white it will be perceived that the chlorine now fill im w it is of a decided preen green color chloi the sense of smell should be tested cautiously y ia in chicase hi case as aa the gas has a most suffocating anad distressing effect when inhaled even ic in n mall small quantity the consequences of a single breath of it taken by mistake are often felt for days it in its A s irritating effect upon the lungs and throat the method of collection last mentioned will show that it is heavier than common a r but this ma may y be farther illustrated by pc url arl it g it from one pa glass glasa as into another rh si 3 horus tak tah takes fire ir spontaneously in this g gs alid aid ald EO do several of the metals when powdered antimony for instance A taper plunged hato hito it burns burna at first with an enlarged rad red smoky flame but soon goes out chlorine has a peculiar power of bleaching and ia s ased i sed very larg largely elyin jn the arts arta for such pi almost any of the ordinary calicoes cali coes may be bleached b by V placing them in water saturated with it the color of red cabbage iq q lor bior is very easily destroyed by a verr very small it autes with soda one of V the he bodies already mentioned ald forms common salt a adi adl substance istance having harmless properties i les ies in itself and differing ing most widely from cither either of those out of welch which ii it is s formed sulphuric acid ia is the common oil of vitriol I 1 has his commonly been called an oil because of i is a thick hick oily a appearance arance but bat has few other pro properties pertle pertie 9 or of oils s it is 13 like them rather tather soft and agreeable in its first feeling upon the skin but this sensation ia is instantly succeeded by an mense wense burning pain for the acid ia is so powerful in its corrosive effects as to destroy both skin and flesh wherever it touches bluh is at once by it eaten eatch out in holes A very small quantity taken into the mouth and swallowed is fatal as all ail allot of the internal passages are destroyed or seriously injured by s costict there have been many cases of dea ded deth h from frona accidentally swallowing even so a portion as part of a spoonful the name acid would naturally cause us to suppose that this liquid would be sour and a ate tibbe of it even when largely diluted with war shows aitto it to be so in in the tho extreme when thus diluted so that the skin may not be at all affected effected it ia is not and has a ra rii hur hur hir agreeable taste if p per saturated with blue litmus a sab a ane ace oce to be found in many apothecaries shops be t into Ws this or other othe racida acids it will become red if the paper thus turned red be dipped into i sol luon of potash or soda or ammonia irwill it will become jicome blue again arain again thia furnishes a test by mems means me ms of which we can tell whether fluids are aud dud or akaline alkaline acid is occasionally found in cn mi combined uncombined with aay thing ther there e le oie ia u western new now york near Lockport ock port where tre ife water as it comes from the spring is sour aa as Ti negar binegar val ini egar gwin owing to the presence of free acid this is a much heavier liquid than water A stream of it poured gently into a cup of water from a small distance di stance stanco above the surface can be seen to tu sink directly to the bottom when agitated agitated arita ted tej so as to man mingle le it with the water the mixture becomes q ue la hot ht because a union takes tales place Liwe lewe ei the two too lit nus ils this acid except in such cases as the above e is always found in in a state of combination with some bome other bubb guba tance and then can not nok be bl teen reco relo iced by any of the pr pro k raes r vs wh avob b I 1 have tuve menu oed 0 ed lu in e f cf of those fols fo fol fou LS 3 of d ait lit and wid in an one to the luc farm farmer r is 13 gyps uia ula or plaster laster of pars para ris gis this as is is well known is a solid and hag has no I 1 acid taste it however consists of sulphuric I 1 ud ald rin ULA umi uni ed with lirag f what is t tono teno r d by lv chemists chem ats aulph s t p 0 line me in every ibs iba I 1 of plaster of paris pana are about A 33 lbs lus of su phuoc i acid 46 ibs lbs of lime and 21 ibs lbs of water epsom salta salts consist of sulphuric acid and ani ma magnesia esia esla alum of sulphuric acid and potash from all of these the acid can be b i sep sed naud raud by clit cu mical ineis it is nl I 1 lira ay iy for fer various varies is I 1 purposes pir poses posca I 1 ad it d a made mide by in e brim brimstone stoie i wil wis wi h cei cel precautions large leaden chamler biri beri not lebs leas important ia Is the nex on our list pho phosphoric uso ubo ri c acid it is 13 41 albo alao 0 very iery sour I 1 andt ani is 13 liv iry y ren rea 8 i i i a while white powder if a i stick slick of ph b n us is 13 burned burn lJ dimes fumes ure ute 1 been seen to na ris i 11 barg 1 urz quantity the acnia unites while bunding with the th oxygen ital i th air ald and aid forms phosphoric acid it if thase ae white fumes are passed through h water auer irwill become sour as it dissolves tie tte the acid they may also be condensed on a cold glass plate this body can be shown in a yet simpler manner by burning a common loco ioco tuco toco match the white smoke which goes affat off at first before the sulphur igi phosphoric acid phosphorus is used in kingon these matches because it is a sub substance stance that in flames easily by a bitle friction all ahola ve rubbed them ona wall ivall or board la n the dark b h ive observed that the they leave a quite bright luini hi minous noua roua trace ilistine wy visible if the match fails to ignite the end of irwill it will also agear bright and the peculiar pecullar smell of 1 phosa phosphorus orus ores may mav be perceived phosphoric acid keld des d ea not seem to exis exist in so large qua quantify as sulp sulphuric hurie hurle acid as it does not constitute a principal portion of any of our rocks it forms a very important part of the lones tones of ali all mils |