MORTAR-MAKING. 893 



for records in connection with the registered titles to land by 

 slight extensions of what has been done, with certain neces- 

 sary modifications of the method I have recommended, 

 Avhich could ba ada]5ted to meet the special circumstances, 

 and the public would soon be repaid for the extra expense by 

 the increased simplicity and consequent reduction hi costs in 

 connection with land transfers. 



5.- NOTES ON HYDRAULIC LIME AND MORTAR- 

 MAKING. 



Bi) A. 0. SACHSE, C.E., M.E., M.S.E. Lou., ice. 



In dilating- upon this sujjject I am fully aware of the magni- 

 tude of the task, and I am also alive to the fact that included 

 among those who may hear or peruse the following notes 

 may be men of extended professional experience, and to 

 whom, in all probability, many of my jottings may be 

 already familiar ; but at the same time there are probably 

 many persons to whom the contents of these pages may 

 appear novel, and prove both interesting and instructive. 



It is seldom (if at all) that the experience of any one man 

 can embrace the particulars that are known to many indi- 

 viduals, and acting under this feeling 1 have freely quoted 

 from several essays of recognised authorities, whose oj)inions 

 and experiences on the matters under consideration coincide 

 with my own. 



A careful examination of portions of the different essays 

 which I have collected from will show a marked agreement 

 in important particulars. 



Seeing that the manufacture of mortar, rubble, &c. is so 

 intimately connected with and dependent upon the quality of 

 the hme used therefor, I have felt it necessary to make a few 

 remarks under this particular heading. 



Hydraulic lime of good quality can now be obtained 

 cheaply in Victoria, and its sujseriority over other limes should 

 commend its use for building purposes. 



The following report on some of this lime was furnished 

 by me a few years back : — 



" I have carefully tested the samples of hydraulic lime 

 forwarded to me, and have much pleasure in being able to 

 report favourably thereon. 1 have subjected the lime (after 

 its having been compounded with sand) to several tests for 



