DRCEMBER, 1015. G 15 of cloud being ctirriod down in streamers, wliicli in turn soon disap ear. In fact, these clouds, stretimers sncl all, the if esconding movcmcnt begins. disa pear e 17 evaporation in about 30 to 40 minutes aftor TORNADOES IN KANSAS. IIy 8. 1). ~L O l t A , Olwrvcr. 11. 8. Wcatlwr H I I ~~W I . [I laled: Wvalher Durenii. Tiipdiii. l h i s ., l W . IS. 1:11.1. I Kansas 1in.s been so coniiiionly wnsiderd 1 .1 1 ~ t.oilinrlc) Stat() of the country tlia t bho t.erni l b Ilete of t,he kind published, Prof. A. J. Henry of tlie 1kent:wr Bureau has published data inclictiting t,lin.t tho t,ot.zil nuiiiber of tornadoes in ILmsns is soiiiewhrtt grezl.ter tha.n the number in any other State. When tlie rclativc areas are considered, however, the nuniber of tornadoes in Kansas per unit area is practically the smie as the corresponding iiuiiiher for Iowa and is but sljg1it.l-j eater than the nuniber for Illinois, yet neither of t'hese gates has Kans~s's reputation of hein a torntido State. Prof. Henry in the same report hn.s $so deduced thnt8 even in tlie Stmates where such stornis occur most fre- qucntly " the probability that, n.ny areti 100 lniles squn.rc will be visited by a tmna.do in m y year is gonrr:~lly less t1in.n certainty," m d further, "for nny specific ttren or farni of 1 square niilo t,he probability [of being Visitrtl by a tornado] is less than one-sisteent,li of 1 per cent per cent.uiT." During bhs 10 yctiis, 1YS9-1S96 and 1914-15, for 8,tnicli definite information regrtrding the dostmc tion by tar- nadocs is available, the average annun.1 number of ilea t,hs tornrrdo, that is, an esceedingly rio P ent whirlinv stmrni of the State has been t i) le result of undue publicity giveii tinuecl by the actirities o P Inter disseniinntors of news. ~~ I Tornadoes. lS95-(16. by Alfmd J. Heuip p..sxiii-sl, rhorts I-\-IIT. (Kcport or th? :See 3 1 ~ Abbe, C.-Tornodo fregurncy per unit wen. this REVIEW, June, 1897. 1'. Chief of the Weather Boreau. 1895-90. 250.-EDAOR. 3s ingtun. 1898. 4O. 1 J ~I U ar!: ...................................................... Pe1,riizry ..................................................... Msrl-h ......................................................... April.- ......................... 1.. ........................... May. .......................................................... Tune ......................................................... July.. ........................................................ A11,oust ........................................................ September. .................................................... October ...................................................... November.. ...................................................... Ikcember .................................................... 0 1 16: 41 66 64 30 15 8 3 4 0 Entire period "OS Wit,h the prwent, available data it, is idle to speculate wlwt.lier a.ny part, of the Stake is more likely to be visited bv t,lirat\ storins than any other part. The roport of Lieut. Fiiiley, while it COTC~S a lon eriocl of time, is sources" years aAIer many of blie storms had occurred, which nieans that many tornadoes might have occurred in sparselv settled coinmuiiities during the early part of the record without havin been reported; the report of short a period t.o shed much light on this question. Present kndwlcdge of the cause of these stornis dis- credits the ides that thcir formation is favored or hin- tlrrcd hy such slight Merences in topography as esist in n Sbate 11s comparatively level as I