162 
READINGS OF RIVER GAGE AT HAVANA, I899. 
(Plane of reference, low water of 1873.) 
Day | Jan. Feb.| Mar. | April} May | June | July | Aug. | Sept.| Oct. 
Nov. | Dec. 
I -5 | 8.0] 10.9} 12.8] 9.1 SETA ALON) ScOnll 2e2a|  20Gs|s ghcn ieee 
ZANGO N79 \p Ue3) | 02. 6y le Qnoal Woe Oul Ar Onl arses ame 2e2Nlle 2 Oui le oll aie 
3 | 6.8] 7.8] 1109] 12.5] 9.4] 8.9] 3.9] 3-7] 2.3] 2.6] 3.6] 4.0 
ANOLON 727 Nt2e2 2s nor On | mOnE AZO} |S 7ialhc2 3 2eO) 1) BON aee 
Sleek We i L2cOu ls D2 SSeS eosin) maly7ieeok ey laos lio On uCeic a ea 
| oe 7A ey SON SVN aShl lash | Gata Bes wel |e Bais || alae) 
TNF AN Feds) 12.9%) L2sO 7s 82201 Ons ALSy sess Oe\e2e3l ee 2a On lung ici ee 
Sul 7cOl7 2) | ol2,. Onli ¥2 Os Se On Gn si|enqasiiseon |i 2nd ul ey 2eOn| les eal ite 
ON 728) 7-3) |) W2eo8|| Uo RON | onze) agulled nol zea | ea RON eae ei 
TOM 729) 7. LISS Eta Sy 7S oe2H |" Aszellie 1820) || 2240) Po 2e7 a esealal eae 
PE 820) | 6.9) |) 13.00 Dele Zaza Oia | Sede lee Se Ou ie 2abh|| wera Aan |e 
12 |Sal)|6.8>|| 13/ON TO 75a) QhOn|miAat) leg 7a 2m) |e) eae SeeAee) 
13) |eSs2|Ont7: || 0329 110 Ure ee sae Onon | md ea ress ib gle 2esa meena Gell mr ea 
Git) ned ORCI ee SRA UA ais || eal) eh ll er) iron ei || al 
TS y Orde |) On5e) Selle Lye te7rau Om Oul| meAlsiiel| ests is|mn2eAe| ea tin Meme erie 
NOW| Sil Gage) 05/0 A Ls 7s 2 OnSe |e AON | ees ile ieziad |e sie (same |mAle 
U7))\18ie231| O53) ) 13.0 euler) 7/stell On 2| dee es Onli 2e4n ego) an ROnEARA 
TS HRGie3) |G. i 13. dal 110) S71 ASrOn| me ARO We RON ie 2. 4l\ p32) |heedete | eAG 
TQ) |(0S940|/ S29) 13. 30iT Olle 7eOnle 77a Anon nesZOF ees hOu eset 4.1 | 4:7 
710) | edekyy MOAN NMSIor ah HOMO Zale |h MeO) SRO - Boule ior l) vl |) Aue 
Pt Mealy | Sey Gieriul LION AN ae Il Geet | Gixey || Waxy’ Buz | ire) PMILSY | al 6) 
PM oF || Gaal Wesae | MOR) 7/40) | a) KO |) 2x) || S52 | sau 4.3 | 5.0 
230F8 On| Ont) 1365) AOA we 7O)l) Ora vin SiO) | (in 2son lies ei suse ere a ee) 
PHU SAOV | Mee Ve YaGy ssh ll ots aga Mave I ARG) Ih aay || eyed ya seh || ie 
25 | 8.9 | 6.6] 13.4 | 10.0 | SEOs OPO BAe alee 7a tes eOn | mas ne An Au See 
26/8585) 6 On 18 sil Os@i he Oe 2a Seize ae aon |e Salllm2aoy len eign) aA mal cm 
27 | 8-5. |9-3)|| 13-1 || O-74 8.3) 5.4 | Ae Sil 2.42.8. |) 3.5 (eal aul tae! 
PAS} atdesy Ona liDeialse eC Oe tinal ASLAN || Wed esr |b a7 Weiss viey || Boe 
ZOW Sez Mees |) AZO R 4a ges Oi47all AO lianas 2h Dea i|lme2 7a ean MAO RG 
30 | 8.0 TA.ON 0-2 Oza leedOn |i iad PRP \| - PALOY | Me hA 4.1] 5.6 
31 | 80 14.0 ae 8.7 eb 4.0] 2.2 Beis 3.5 Bee Wellset7/ 
Mean| 7.99| 7.02, 13.05| 11.15 8.02 7.8| 4.38] 3.20] 2.63] 2.99] 3.88] 4.74 
GrandfAverage: i...) icc nose de eek Soe oo eae ee oe aL ba ee eee 6.401 
These gage-readings at Havana have been plotted in the 
hydrographs of Plates VIII. to XIII. on a seale large enough to 
show the minor fluctuations, and at the same time to serve as a 
basis for the graphic representation of temperatures of the 
water and the results of the quantitative study of the plank- 
ton. The hydrographs for 1894 and 1895 are based upon the 
records at Copperas Creek with such supplementary data as 
our incomplete records at Havana provide. For convenience in 
comparing the seasons in the several years the following tables 
have been prepared from the same data, to show the monthly 
and yearly means, extremes, range, and total movement. 
