78 

 taculrr budc^ is forrod pcpp dirtanop holov; the flrr=t circlo 

 of tentacles. Vhe^ the rolyr ir frc tworty to tvp^ty-four 

 hoiirr. old, or about -t^werty-ti-o hourr ai'ter thp opp ic laid, 

 it iE roady to devolor thPXhird vhorl of trptaclpr:. Thus 

 thp tpntaclpc r.earPEt thP ariox of tho hydrarth arp thp oldprt 

 ard larppst. Thr circloc arp irdofirito, that ir, tho ton- 

 taclpr of a v/horl do rot all aris; frcr the srrp ]pvp1; so 

 that ir tho advarcrd hydr^/^ thry havp rathor tho ajjppararop 

 of hpinr scattorpd thar arrarprd ir rlrclpr. Thp tortaolps 

 v/hpr fully dovplcrod arp stout a'^d filiforr; a^d aro carable 

 of 'uch Pxtr?ision and ccntractior . Firurps 37 to ''^1 illustrafe 

 varlour staror i'-' tho parly dovplorrrrrt cf tho hydrarth; thP 

 you'^FPst bfirr about fifty hours ard tho '^cst raturpd scr-p 

 sevp-'ty hours old, Fif!urp 3? shcv.'s a forr irfvhich tho ^rlyr 

 arises frc- rear tho prd of tho hydrorhira. This is oxc-pt- 

 ior.al. A hydra-^th •.vith thp third rirclp ci tortaclrs is 

 shorr ir Fifurp 41; the tprtaclps of tho first v.-horl havp 

 bpco-^e corsidorably Plonpatpd, The hydrooaulus row boccrps 

 Irnppr ard Tcrr- slprdpr; ard thp hydra-^th assuTPs a fusi- 



