Traiisaclioiis Society Xa'cvl Architects aud Murine Engineers, Kol. 27, IQ19. 



Plate 6 O 



To illustrate paper on "The .-^plication of Standardisation and Graphical Methods to the 

 Design of Cylindrical Return Tubular Boilers," b\ Henry C. E. Meyer. Esq.. Member. 



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SOBniS PETERS. INC. LITMO.. WASHINGTON. D. C. 





