BAR 



79 



BAR 



sometimes ceases to ferment without i ily effects a cure. Scoring tlie bark 

 any apparent cause. Wlienever the 1 lengthwise with a knife is a usual reme- 

 heat declines, the tan must be taken dy, and generally effects the purpose, 

 out, sifted, the dusty parts removed, | BARKING IRONS, or Bark Scalers, 

 and some fresh tan added. Sometimes i are for scraping off the indurated epi- 

 turning the old tan and moistening it dermis, or dry scales, from the stems 



be sufficient, 

 It is desirable, on the first formation 



1 and branches of trees. 



BARK STOVE, or Moist Stove, is a 



of a bed, to mix new and old tan to- | hot-house which, either by having a 

 gether, in which case the quantity of i mass of fermenting matter, or an open 

 new bark to be brought into the pit will j reservoir of hot water within side, has 

 depend upon the goodness of the bark, I its atmosphere constantly saturated 



and the bottom heat required. As much 

 new tan as will fill two third parts of 

 the bark-pit, with a mixture of old 

 rotten, reduced almost to earth, will 

 produce a bottom heat of about 85^ ; 

 when old tan with higher remains of 

 strength is used to modify the new, the 

 same heat may be produced if the quan- 

 tity be not more than half the capacity 

 of the pit. This refers to a new pit; 

 after a bark bed has been in action, 

 partial renewals of bark to keep up the 

 heat are frequently sufficient in the 

 reduced proportion of one-third, one- 

 sixth, one-twelfth, or less. At inter- 

 mediate stages between the partial 

 renewals, the bed requires only to be 

 excited to a brisker fermentation by 

 forking up. About five-sevenths of the 

 pit from the bottom should be occupied 



with moisture, congenially with the 

 habits of some tropical plants. It re- 

 ceived the name of Bark Stove, because 

 tanner's bark was formerly a chief 

 source of heat emploved. (See Stove.) 



BARKKRIA. Two species. Stove 

 epiphytes. Division. Peat and pot- 

 sherds, or wood. 



B A R L E R I A. Fourteen species. 

 Stove evergreen shrubs, except B. longi- 

 folia, which is biennial. Cuttings. 

 Loam and peat. 



BARNADESIA rosea. Stove ever- 

 green shrub. Cuttings. Rich loam. 



BARNADIA scilloides. Half hardy 

 bulbous plants. Offsets. Peat and loam. 



BAROMETER.— Mr. P. Christensen, 

 of Cowes, in the Isle of Wight, Lecturer 

 upon Astronomy, &c., has arranged a 

 table, which no one having a weather- 



by the new and old tan as a fermenting glass should be without. This "Com- 

 body; and about two-sevenths from the panion to the Barometer" is the result 

 top, or a little more than the depth of of thirty-two years' observation, and 

 the pot, whatever that may be, should the following is an epitome of the in- 

 consist of old tan incapable of heating, formation it gives. During the tirst six 

 60 as to burn the roots of the plants ; months of the year, when the mercury 

 as least such should be the ordinary i is rising, if the weather has been bad, 

 distribution of the tan ; but where pecu- [ and the mercury reaches to 29.62 

 liar circumstances require a speedy inches, there will be a change ; if to 

 augmentation of heat without displacing 30.12, the weather will be fair; if to 

 the pots, and when fruit is to be swelled i 30.29, set fair. If the mercury has been 

 off in the last stage, the earthy tan at high, and begins falling, there will be 



top may be taken away, and new tan 

 substituted. — (Abercrombie.) 



As amanure. See vegetable matters. 



BARK-BOUND. — When a tree is 

 affected with this disease, cracks will 



a change if it declines to 29.90 ; rain, 

 if it descends to 29.50 ; and wind, with 

 rain, if it reaches 29.12. 



During the last six months of the 

 year, if the weather has been foul, and 



appear in it partially, and in the case of the mercury begins rising, there will be 

 the Cherry, Apricot, Peach, and Necta- a change if it reaches to 29.48 ; fair if 

 rine, gummy exudations will follow. It to 30.13; and set fair if to 30.45. If the 

 is a sure indication that either the soil | weather has been fair, and the mercury 

 is loo rich, or not sufficiently drained ; i begins falling, there will be a change 

 the latter is usually the source of the if it sinks to 29.87 ; rain, if to 29.55 ; and 

 evil, causing a repletion of the interior wind with rain, if to 29.28. At any time 

 vessels which the dry cuticle cannot of the year, if the mercury fall to 28.10, 

 expand sufficiently quickly to accommo- or even to 28.20, there will bo stormy 

 date. I'ncler-draining, and scrubbing i weather. These conclusions are from 

 the stem with brine or soft soap, speed- 1 observations made at thirty feet above 



