By the former pump, for instance, onl)' a certain amount of air could 

 be extracted, because at a given stage the power required to work the 

 piston is greater than a man can apply. But in the double action we 

 have the mechanical advantage of a " rack and pinion," together with 

 the resultant thrust of the air on the descending piston which assists 

 in driving the other piston up. Hence, the object of impregnating 

 the silk to the very utmost is effected by creating a vacuum as perfect 

 as possible. And this receives ample confirmation by reason of the 

 time being considerably prolonged in the process of drying. 



At this point it is desirable to note that rods, lines, winches, etc., 

 are sold to the public in London and elsewhere as being of my own 

 type or invention ; but let it be distinctly understood that I am not 

 pecuniarily interested in the sale of any single article associated with 

 my name. The object, therefore, in recommending the lines just 

 mentioned, which can be had at any tackle shop dressed or undressed, 

 will be perfectly obvious to all. 



In dressing them there is a first and second process, i.e., the 

 body dressing and the polishing: If the highest standard of excel- 

 lence is to be attained, neither process should be hurried, except on 

 one occasion to which allusion shall be made. 



In the first process the line is packed in the tumbler sent with the 

 pump, and sufficient oil poured over to cover it. The tumbler is 

 then put on the table of the ]iump and the glass receiver set over it, as 

 shown in the engraving. 



Great care should be exercised in packing the line in the tumbler. 

 On taking a new one from the cardboard box, get your servant to 

 place his two forefingers through the coils, as yet undisturbed, so that 

 they shall assume a vertical position. Now carefully cut away the 



