抄録
During his three months trip in California and Texas, the writer recognized remarkable progress of the production technics. Followi ng factors may be considered as the reason of this progress;
1. Position of oil industry in U.S.
2. Enormous power of industries as a background of oil industry
3. Fare Competition
4. High grade differentiation of technics
The fourth factor is the only one which is able to improve andshould be improved.
