74. Rules and Tables adapted 
the tribe to whom the female belonged. This concludes the 
the ceremony, and the young man then returns with his wife 
to his own tribe. He is, however, laid under this peculiar in- 
junction, that he must not see any more his mother-in-law ; and 
the following circumstance in connection with this fact, has 
been related to me by Mr. Grant, an eye-witness. “A mother- 
in-law having been descried approaching, a number of leubras 
formed a circle around the young man, and he himself 
covered his face with his hands ;—this, while it screened the 
old lady from his sight, served as a warning for her not to 
approach, as she must never be informed by a third party of 
the presence of her son-in-law.” 
The natives, however, of this, as of every other settled 
part of Australia, are fast disappearing before the rapid 
encroachments of the white man; in perfect accordance with 
that universal but mysterious law which governs civilization 
wherever the white man has planted its flag, sweeping the 
backward races from the face of the earth. 
Art. VI.—Original Rules and Tables adapted to Cases of 
Sidelong Ground in the Setting Out and Computation of 
Railway Earthworks, By CLEMENT Hopexrnson, C.E., 
District Surveyor. 
HAvinG originally investigated and computed the following 
formule and tables for my own use, I venture to submit 
them to those members of the Philosophical Society who 
belong to the Engineering Profession. 
Before giving my tables for determining the side distances’ 
that define, on sidelong ground, the edges of railway eut- 
tings and embankments on both sides of the central line of 
equidistant stakes, I will’ briefly state the methods that 
have been generally followed for determining side distances. 
First.—Instrumentally; by means of the well known 
combination of graduated bars and arcs devised by Sir 
John Macneil, which, when the sidelong inclination on 
either side of any stake had been determined by a clinometer 
or other instrument, admitted of being adjusted so as to 
show by inspection, on a graduated bar, the required side 
distance. Sir John Macneil’s instrument is not however 
applicable to those constantly recurring cases in which a 
