1onta TS Sstio

c.9.S. of Tnks o£ U'aod

Comments ci he ?.S. o tenhs oP v*ard shows severa/ cut sechions of Seminiferous kubue" i Phe tubules on held togeher by intertusulor conneciue rsue o) 9hit interhubular Conn ecue itue ako con4ain ceuk col ed Interishal celn" rezpanti6h r seronobry Sexual ehorater by secoehon o6 male homone. oyy Phe seminilen aus Aub we coneis o6 Joninas epiMelium whkh itorpons/ble krspenm produehbn. ghe oormuhda maturto to Am tpenm in he /umen ob Aeminiferoue kubule,

(u The 9erminal opiMeli' fors he primany speamocyk hich makut to nn eeon dary spermaloute which han Arm tpmahds.

5. Hiskologiral ghdes 'Aves CBird)

A. V.S. oPskin of Bird

Commenh- ) v.9. of skin ob biepon shous two moin layer he epiermi*

Ond inner denmis, i Phe epidemis hao ouormer layer ralled keather gvm " followed 6y /oyor o Cornibied cetlh caded "8hakum Co -neum

Ci Dhe 9hekum coneum is Aollourd dy oibAincl /eyen og& Column and eonnuounty diurdiny ceuo ealed he "Shakumgrminiuauum * he odermit ond epr dermis art eporakd sy layer baeak4 v Phe lowor pond b dermit toneitt ab Conpoetly orranfe d Connes ue Asrue on celain fal lobuts caled He heum comp eucbivum "

He 9halum Geminiaivum catted Mu benenant membrane cuy Phe inner layer og ndegunent or oormit s diunible into upper ayer contishing of oote comecljue Asue or "ghakm pangiotum ?

(Uri) ?he demis also Contain blood vesrell, nenie i5 mucle Dibr ee.

Pimordum of demad papillos teshn ppttoe

Teahr gm

Srelum CovneUm Stotum malphigf Teohersowve Geathex Foic vestica malphiion

Seuno pulp

- Shofum corneun

Sowiele sraum molphg

Sexnol pulP

8/oad veme eunia

&. Developmend f Con tour &dewn Aaher in pigeon

Comment ci Oeueopmen t of eakhor nkork with ormokion Primoridium rajtuion " casled pim ondium of derm a papillae i The cels og epidermit Hhon a9g*griole to fom lealher popitloe, he b on ob hir feoher popitloe tin ke o form he Feaher £ollitle ciy from the kalher o/hicle,eabhr grm ores ciu) 9he bone o e Poahor allie the in shakun jemin ahvon whith hoough tewoo ob diuiion d'lenbiobes o form bansr he feaher germ than growt o Arm rangpertn sheah onin aking from skakum germinaivum uhith enetoten gro -wing ealher

Ciy 9hn Sheath potun cenhal tosd cone Formirg pulp whith it nuhikoe in Anchon.

(uil) At he AnMer dovelopmen otu Ae tronspann Meafh s pealed og Ond 6anbes emerges with emengeno eAaher,

C.S. oPcrop o Gizord & Proven icuwu

Commens i 9hecrop opent ino oetophagua which /eats ko prouenhiuluo di Ohe secion shous hol prouenhduuo thon opens ino giaand Mrough ondior oponin. cin') ?he proueniculup Conains htk mutowo glods whith tu he . . « gieond phow 4btk murtulor layer Asllound by homey tining gia20rd ond lumen o gi2aod, he Hony tining ton tains phrre eh tones whith helo in ginding urd ohuning 6 6od.

(u 9he muculor layor ob g*2end conlainr bols cieulor and tongikrehad mugele Aibeo.