UNION COUNTY. 327 
Ouercushtinetoria= Black Oakes v we tes dcvaucled iets sees ti oeaccabelesteedess Bart. 
Mulia WANN eTA CANA = BASSWOOG be csccs donscecslsciisss ostaleaspereds vecsee ccc coestlessacioeses L. 
Commuspionida a Wow OOM ateu nessa nbe humor le eccuemnele ree cldayconeen eth ce L. 
Chyaya, alla Sihaeeoiak TERIOR ona 4.555 osaceoces oonceun ce uloanetiee eevbonedorcausonaee Nutt. 
Conv amn Orci a tl oM el CHOY sein cssee ssa wercuceceloonianton esses aesuseencenas ces Nutt. 
Platanus occidentalis—Sycamorve ...............ssseeececcessenecees cosenseer ceneee Joy 
PHSculuUsnolab as UCKeY Cy keen witcanseusedt AasN ccaxnciee serseseaeuaseteteeeceaices Willd. 
MINORS howan. ATE GAA NA —Ne Tah) ANID. ONS ce sacdeononcood cbudocen oonbocneo cde Mill. 
Acer ni bRuin Som Maple ices stuee ees ceeteececlse secs cccess WRC or caituns sual L. 
Carpinus Americana—Blue Beech.................. By ay he DL AR a Michx. 
QOETROUIS, allo Wot) ORNs 4an65 ae dodcna gobdod copes doBboo lod anda needes Bab QUASAR obs L. 
Ouvenrcusmmacrocat pao iiy Oakyuseedeeencshen ce uicccssueeaney sccuceessiens Seclecctes L. 
(Wianu Seah Slappoe taylan eee ee Neuer ccwactaces neces sieceedesececevesseleas Michx. 
PE AxXaiy SPAIIMETACAMAL ON VAINILe | WAS lteass etencsecasaectcuessccecces dese cascenee sacs L. 
inaximursisampucitolia— I blackewAsiiwctact:leccvcrccrssscesiccdecetesecoss Mutealens Lam. 
Gleditschia triacanthos—Honey Locust................ccssscecen cee eee coeees eee LL, 
@eliisfoccid ental slack pernyesscescose secs deseisrstcuisscecsowteceeesieeoesessssices L. 
Crataegus vCOCCimeda IM MOLMp sed wets cct Nacesissnece aifeaise celsncsicasieesiesejce sels L. 
Sralliisse: rankortey-=IBeVelke: NAVAN KON? cgobid dacees conoce Hone hadleeoeonces cooecuadcord os oceuaanee) dll Eshslians 
Juans mnirona—— lacks vial Uist secs iccecssee eeineeoesalscslcecioontectinese cc nen lanes L. 
Quercus castanea—Chestnut-leaved Oak...............cseceeceececeeecscssceeeee Willd. 
BEUMUSHSeTOLINA=——blAeka @hengy ee iractscetdcseseseccsses snatece stecelseciescioas cesdees Ehr. 
EAVAGU SIAC OOM AHA WV Vpll a wAR DIOLS east aceslascine east ne sles tsi svelasesduecclaceesacns L. 
Ocstiryea, Witnetumien rovers eos ons ado ndoues  anboedaciesusacibebacunsocaeuodccedioeoe  ANUDIGL 
Ropwlusimonilitera— Cottonwood wins c.-sc cece cceeeseceeesjerssscieceiers ese tecicense Ait. 
Asimina triloba—Pawpaw...........- ELV eR RL Lh tte ate ee Ae Ait. 
Populus sreraneitoneler une oa ERS ae Rene SuMC Ban te Ween eainon ne cci TVET CLiaxe 
WegoisnCanadensis—- Judas nee ew a eee. chsets ects lech atelaecesensedserees cnt ib, 
Qucreus palustris wim Oaks. cos cs riesccssiossecnessenscssecce ese eeciedsess secees DuRoi. 
GEOLOGICAL STRUCTURE. 
The rocks of the county embrace the following limestones, including, 
also, the Oriskany sandstone: 
Hamilton, or ) 
Upper Corniferous, | 
PNR MMC UR ureter ees aaees tt Seis ei SCE hy ce Ke Devonian. 
Lower Corniferous, | 
Oriskany, ‘J 
IW alte rin ems caene, taprere cc astteuiastalecvclsc suas seecsladsalcss sealsen ter ... Upper SuSE 
By the Hamilton is here meant the blue limestone which is quarried 
at Delaware, and which is regarded by Dr. Newberry as partly Hamilton 
and partly Corniferous. It has been mentioned frequently by the writer 
in reporting on counties in north-western Ohio, under the designation 
of Upper Corniferous, in order to keep it distinct from the underlying 
limestone, which is plainly Corniferous. In the coloring of the county 
