f ransn<rito>u Society Nai'oi inhilects and Marine Engineers. Vol. ii, IQ13. 



To illustrate f>af>er on "The Evolution of the Lightship,'- 

 by George Crouse Cook, Esq. 



Lcnyihf Aeffireen perpentiiatiars. JJt'IJ' 



Beam-, mvlcleel'. Z9 O 



Z)tspI<icemBnt' at l^'9'(ira/h. ~660lons. 



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