742 PROCEEDINGS OF SECTION J. 
hand, the tides have their own variable times, which do not 
conform with the ordinary hours of everyday work. The object 
of this invention is to overcome the last ditliculties, and its peculiar 
feature is that the motors do their work continuously without 
interruption, consequently we become independent of the daily 
variations of the tides. This method consists essentially in the 
employment of a pair of reservoirs formed by “dal dams, 
constructed of shutters for the principal tidal dam to open and 
close automatically at will, an arrangement proposed for the tur- 
bines (similar to that adopted for accumulators), in forcing water 
beneath their bearings so that they may be abie to follow the 
changing level or the sea either gradually or at intervals. Each 
dam is connected with turbines or other water motors arranged 
to work ; when the water is flowing into as well as flowing out of 
the said reservoirs. 
Through gradual and alternate emptying and filling of these 
two reservoirs the motors are kept in motion in a continuous 
and uninterrupted manner. Both reservoirs are able to produce 
a certain number of horsepower during thirty-six working hours. 
The general remarks made by Mr. Diamant concern the con- 
struction of the reservoirs, installation of motors, and the con- 
struction of a temporary bridge along the breech of the principal 
tidal dam in order to lower the caissons in an easy aud conveni- 
ent manner. 
12.—DEVELOPMENT OF ARCHITECTURE 
AND ENGINEERING. 
By F. C. JARRETT. 
[ ddstract. | 
As science is simply knowledge, the more lucidly that knowledge 
is conveyed the more clearly does the writer evidence the mental 
process by which he has worked. The advance of science has 
been so rapid that we are apt to under-estimate the undiscovered 
field still before us. Thomas Carlyle says, “The eye sees what it 
brings the power to see.” This must be applied not only to the 
work of the specialist who devotes a lifetime to the pursuit of 
one study, but to the simplest forms of education which we know. 
The power to see is, after all, the power which education gives us 
to see. There is no practical end to discovery or study. Nature 
is not exhausted. Discovery has recently given us gutta-percha, 
asphaltum, and natural gas. Study has made iron trebly valuable 
as steel in various forms. The whole history of the past, written 
in stone, repeats to us ever the one lesson. Art is greater than 
