REAR VIEW op A LOWER LAND GUIDE CRIB, ORDINARY TYPE. 



(To fact p. 159.) 



VIKW OF A LOWER GUIDE CRIB FORMED OF SEPARATE CRIBS WITH 

 GRILLAGE TIMBERS. 



VIKW OP AN Ui'i-KK (It-IDE WAI.I. FORMKH m TIMIIKKS SIMKKH 

 REPLACING AN OLD CRIB. 



