Transactions Society Nat'al Architects and Marine RiKjinecrs, Vol. 36, igiS. 



Plate 43 



To illuslralc /^apcr on " I'rof/rcss in Tnrhinc Sliij^ I'ropulsion,' 

 hx Ti'ancis I foih/kinson, Esq., Visitor. 



Fig. is. — An Otl Strainer. 



