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Fig.l. Screw joint s Fig.l. Asphalted sheet-iron,m/uro,

asphalted, sheet,-iron, main,. with grooved joint,.

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Fig. 3. Chameroys collar joint.

Pig. 4. Herma/msccUarjoint,.

A-5- CaouLchowc, joint, wide one movable, flange.

Fig.6. Marinis Caoutrhoar, universal, joint.

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Fig. 7. Fores spherical socket joint -

Fig.8. I) 1 .'ATormandys joint/.

"Vincent Brooks. Imr.