770 



all rcfiiso fire the best and 8irni)lest prefautiona. Fumifjation with snl 

 l»!mr is ivcommeiHled as an «'ff«M'tual niethofl of dt'stroyin^ tin* s|>i»il*s. 



'i'jiK criiiNU OF Havana si:i:i) leaf t(»bac<"o bv artificial 

 HEAT (pp. 187-190). — The so-called '' Suow modern barn system" of 

 ('urin<;; tobacco was introduced into Connecticut in 18!>1, and the sta- 

 tion was n*(juested to make observations on this method of curing. 

 Tlie barn and ai>|)aratus used in this system are briefly describcil. An 

 exj)erinu'ntal barn was erected at Nuffield, Conni'cticntjn which Havana 

 seed leaf tobacco y;rov\n in that town was cured ]>y Mr. VI. F. Paschal. 

 "So far as known the system had nctt been applied before to the eiirin<^ 

 of \vrapj)er tobacco " 



A. L. Winton, Jr., Ph. P., of the station and an assistant made obser- 

 vati(>ns of the tem]teralnre and relative humidity in the i>arii duriii-; 

 the enriiig' jiroci'ss, which are reported in detail in a table, 'fhe time 

 required for fillin;; the liarn and curing the leaves was Just II days, 

 ]irobably a lonjjer period than would ordinarily be taken. Pilliiijj the 

 barn occupied IL' hours, wiltinj;; the leaves IS liours. The followiiii; 

 is a summary of the observations arbitrarily divided into dilVerent 

 periods: 



Our obscrviitioiis liei^au wlun the J):irii w:i8 floscd ami tlio liics Itiiilt — .\ii!;ust '22, 

 at 1 ]). III. 



(1) I'loiii tlic^ time tin- lircs w«ri' I'airly K'^inK iunl the tlin.s wariiu-il till tin- yi-llow 

 roliir ii]>|M\'irc<l on th<; tips ami in spotw over the leal" — ^tlt LoiirH — tlie f4!ni|>urattir<> of 

 the b.arn lliH-tiiatvil between JU'-' and 10."> K.. ami on theaverajje wasH" ". 'I'he relative 

 linniidity in the barn was from S<! to KM), ami on the averajje \va.s }>2, while that of 

 the iiiitia' air averaged H2. Thi.s is a nearly saturated atniosphiTe, ami whilu :i ^ood 

 «leal of water in tlie a;;j(re;;ate nii);ht eva]iorato from leaves four tilths of the wci^jht 

 of vvliiih w:i-s water when they were put in, ther« is nothiie^ like rajiid drying. 



(2) l"'roiii the tiling when yellow j>atelh's lirst appean-il to th- lirsf sij^ns of brown- 

 inj; — 21 hours — the temperature of the barn varieil bctwerniW ami 10."» . and on the 

 averai^e was 102 . The relative hiiiiiidity varied between 7H and !K). or on the :iver- 

 ufje 8:5. while that of the outer air varied from 77 to !•!. and aveiajjed H6. In this 

 ]ieiiod llii- teiiijieratiire has risen .^> and the hiiinidity has falli ii sli;rhtly, the leaves 

 ale '- sweat iii^," and \\ ater stands on them in drops. Here a;;aiii there is no doiilii 

 slow di'NJii;;. lint iiol)iin<; like what uoiild taki- ]dare in i-\i-ii moderaladv dry air. 



The atiiiospliric of tlii' liaiii is at this time almost iiisnppoi t.ilde I anse of the 



moisture. 



('A) In the followinj; 21 hours the same state of Ihinjis eontiniies. 'I'emperatiiro 

 between JKi and 101 , averaf^injjJW ; relative linniidity 74 toSl. avera;iinK77. At the 

 end of this (leriod note was tirst made of a " t^ibaiM-o odor," dillienlt to deseribe but 

 due to an exhalation that was int^-nsidy irritatin;; to the eye's and considerably ho to 

 the throat. ,\nalyses id" the lea\es before and after enrinf; do n<d imiieate any con- 

 Biderable loss id° nicotine. 



(-1) Next follows a lonj^er jieriod — .">! hours — diirini; which the tob;ieeo odor is very 

 Htroni;, at times almost unbearable even for the time needed to make observations. 

 In this jieiiod the leaves are dryinii somewhat more rajiidly. thon<;h I'litirely limp 

 and danii> to the touch. an<l the ciirer is waitinji for the brown color*t«» spread o\«'r 

 the whole leaf and to beconn- dark enoiijjh. T<'m]>eratiire from !•!> to 109 , avera^jinj; 

 10;V ; humidity from ("i2 to SO, averaj^inf^ 70. 



(5) Next is a short |>eriod — 18 hours — diiriui; wlii< li the air j^rows r.ijiidly 4lrier. 

 This |ii riod miulit ]ii'obaldy have been omitted and the heat raised at 2 p. m on tho 

 twcuty-eiyhth, but for greater security the <urcr waited. 



