'68 
Proceedings. 
S.A. NAT., VOT. XrV. 
-May, 1933. 
settlers who eventually become interested and conduct researches! 
of their own. The whole section of the soil is considered. Eachj 
variety of soil type demands different treatment. A soil map 
is plotted and becomes a valuable aid to the investigator andl 
grower. Although a district may have good soil, it may holdl 
six or more types. Alallee, red-brown earth, black deer mill 
(podsol), aie thiee main types of soil. Alost of the soil surveysi 
clone in South Australia are the districts along the River Murray 
where foity^ to fifty types have been recognised and described., 
Prof. Prescott was heartily thanked for his highly’’ instructive 
lecture and for the manner in -which he delivered it. He 
exhibited a large series of soil types, which were glued on to; 
laths in such a way* as to show’ a' section from the surface to a 
foot or more below. Soil maps of the Murray and Kiiitpo Forest' 
were also shown. 
MAY, 1933. 
The monthly meeting w’as held on 16th May, when the' 
chairman (Afr. E. H. Ising) presided. Present were twenty-nine- 
members and friends. 
ELECTION. 
Air, Shinkfield. 
JUBILEE. 
After discussion, it was proposed by Mr. J. A. Hogan and 
seconded by Airs. F. Cordon that the jubilee celebrbtions be 
held in conjunction with the Annual Wild Flower Show on 
October 13 and 14, 1933. — Carried. 
lecture. 
Air. H. AL Hale, Curator of the Aiuseum, gave an excellent 
lecture on 'Urabs and Prawns as Enemies and Friends of Man,” 
and illustrated his remarks by* a large number of lantern slides. 
Air. Hale mentioned how' different species of crustaceans 
destroyed man’s crops, his agricultural lands and in other ways. 
They also prey upon man's food supply in the shape of other 
hsh. It was in this w’ay they* tverc definite enemies to inian^ 
On the other hand, there w^ere ways in which other crustacean 
species proved themselves as friends To man. Some of them 
were used for food, others were food for other creatures which 
w*cre useful to mankind, such as whales. By many other illustra- 
tions Air. Hale made his lecture one of extreme interest and 
education and Avas warmly thanked at the close of it. 
EXHIBITS. 
Mr. Ji. M. Hale: A large number of crustaceans in illustra- 
tion of his lecture. 
