OFFICIAL JOURNEYS. 481 
7. Least petrological variation is found in marine sediments of isopic facies and 
of uniform and similar grading, deposited at some distance from a shore-line or towards 
the close of a period of continuous sedimentation. 
8. More variation is noted in deposits formed in epicontinental seas, especially 
under archipelago conditions. 
9. Most variation is observed when sediments have been laid down under conti- 
nental or entirely terrestrial conditions, in which cases isolated basins of deposition 
are formed. 
10. Tectonic movements usually result in petrological ‘rejuvenation’ of sediments. 
The converse proposition is also of much value. 
11. The detrital minerals of sediments (exclusive of deep-sea deposits) are domi- 
nantly the ‘ stress-minerals’ of Harker. The anti-stress minerals are relatively less 
stable. : 
12. Unconformities are frequently marked by petrological as well as by palzonto- 
_ logical breaks. 
Examples are cited in illustration of each of the various principles outlined 
above. 
Prof. W. A. Parks, dealing with the search for Dinosaurs in Alberta, stated that, 
as the party had passed through some of the country where in former ages Dinosaurs 
had wandered, he could not do better, in a general lecture, than describe the work 
of an expedition he had organised to discover and excavate the remains of certain of 
these interesting creatures. By means of lantern illustrations he showed how an 
expedition into the Bad Lands was arranged and how roads had to be made, often 
for miles, to haul out the blocks of stone in which the remains were sealed. The 
actual cleaning up of the skeletons was not attempted until the material was assembled 
in the laboratory, for it was impossible to spend the necessary time to effect this on the 
actual expedition. 
Those who did not take part in these meetings were given ample 
opportunity to view the city and neighbourhood. Those who remembered 
the city from their visit during the Western Excursion of 1909 were struck 
with the evidences of growth and civic advancement since that time, and 
particularly with the extension of educational institutions, exemplified 
not only by the stately University buildings, but also by the schools and 
their excellent appointments. Special geographical, geological, and 
agricultural parties were formed. Among the points of interest which 
impressed the visitors were the striking situation of the city, high above 
_ the banks of the North Saskatchewan River, and the evidence of the varied 
resources of the locality. A coal working was visited by some of the 
members, and information was obtained as to the extensive coal-field 
underlying the district. The timber resources were pointed out, as also 
the special agricultural interests of the neighbourhood, notably the 
reclamation of land which had recently been muskeg (peaty bog, choked 
with stumps and old timber), the market-gardening or ‘truck’ lands, 
cultivated in particular by Chinese, the active cultivation of flowers, and 
the agricultural exhibition grounds. 
An interesting experiment is in progress at the experimental station with the 
object of ascertaining whether alfalfa if sown down in place of a fallow can be relied 
upon to stand for several years. The experimental plots laid down in 1918 are still 
standing remarkably well. Moreover, it has been found possible to cultivate between 
and across the rows of alfalfa in the fall and spring and so keep the land clean, The 
preliminary results so far obtained indicate that wheat after alfalfa is almost as 
_ satisfactory as wheat after fallow. ‘Two cuts per annum are obtained from the alfalfa, 
with an ayerage yield of eight tons of green feed (30 per cent. dry matter). It has 
been found that more frequent cuttings tend to weaken the crop. 
Valuable experiments are also in progress on the growth of fodder crops for pigs. 
Maize, peas, barley, and a mixture of maize and peas are being grown for this purpose. 
When the crops reach the stage at which the grain begins to harden the pigs are 
turned in. It is claimed that the crop losses are small, so that the pigs can be 
i 1924 II 
