Comparative Experiments in concrete and in zinc Poultry Houses. N. Fiat. Hassadeh, Vol. 13, 1932, No. 5, p. 204–208. Palestine (Hebrew).

Due to the fact that the many cracks found in wooden chicken houses, harbour the ticks Argas Persicus, which cause the very fatal disease, Spirochaetosis, to the chickens, and since it is very difficult to keep wooden houses free from the ticks in Palestine, concrete and Zinc (Corrugated iron) chicken houses are built.

Bacillary White Diarrhœa. J. G. Halpin, C. E. Holmes and B. A. Beach. Annual Report of the Director, Agricultural Experimental Station, University of Wisconsin, Madison.

Experiments indicate:

1. 1. That this disease does not decrease egg production.

2. 2. That it does not decrease the percentage of hatchability of fertile eggs.

3. 3. That there is no great difference in the percentage of chick losses between the offspring of reactors and non-reactors to the pullorum test.

4. 4. That since the percentage of reactors in these trials decreased oonsiderably, there is a possibility that resistance to pullorum disease may be developed by breeding.

5. 5. That a considerable number of reacting hens come from nonreacting dams, and that on the other hand many non-reactors come from reacting dams.

Investigations with livestock by the Massachusetts Station. Massachusetts Sta. Bul. 315, 1935.

In poultry tests data are reported on breeding poultry for egg production, by F. A. Hays and R. Sanborn, and breeding for high and low resistance to fowl paralysis, by Hays, C. S. Gibbs, W. C. Sanctuary, and J. H. Vondell.