"It is to be regretted that the house repainting tests which were conducted are of no special value, inasmuch as no information is on file as to the composition of the old paints originally on the houses before the application of the test paints. Imperfections in the old coating, such as excessive chalking, deep checking, scaling, rosin exudations, etc., affected the subsequent coats in such a manner as to prevent any knowledge of where the new and old paint troubles began. The committee, therefore, omitted a detailed inspection of such tests. "Examination of the three houses which were painted over new wood showed results which correspond with the results obtained from the fence tests. That is, they showed the ultimate value of high type mixtures of several pigments over one pigment alone. These tests seem to indicate that very good results can be secured from most of the paints sold in North Dakota. If the consumer or householder would exercise more care in the selection of wood and preparation of surfaces, with due regard to the proper reduction for various coats, more satisfactory results would be obtained. "From an examination of certain paints on the 1908 fence containing petroleum spirits, it would appear that this paint thinner is of value, and in the face of conditions such as are presented by the present scarcity of turpentine, the use of petroleum spirits in moderate quantity would be justified." NORTH DAKOTA TESTS [Illustration: 1. Formula No. 21, Section 31, on 1907 Fence] [Illustration: 2. Section 80, on 1908 Fence] [Illustration: 3. Formula No. 6, Section 9, on 1907 Fence] [Illustration: 4. Formula No. 2, Section 3, on 1907 Fence] [Illustration: 5. Formula No. 1, Section 1, on 1907 Fence] [Illustration: 6. Formula No. 14, Section 21, on 1907 Fence] [Illustration: 7. Formula No. 13, Panel 19, on 1907 Fence] [Illustration: 8. Formula No. 19, Panel 28. Broad, Deep Checking on Corroded White Lead on 1907 Fence] [Illustration: 9. Formula No. 24, Panel 36, on 1907 Fence. Good Condition. Surface Checking Only] [Illustration: 10. Formula No. 25, Section 37, on 1907 Fence. Good Condition. Surface Checking Only] [Illustration: 11. Formula No. 8, Panel 12, on 1907 Fence] [Illustration: 12. Formula No. 10, Panel 15, on 1907 Fence] [Illustration: 13. Panel No. 34, Formula 23, on 1907 Fence. Deep Checking on Corroded White Lead] [Illustration: 14. Test No. 13 on 1906 Fence. White Spots Show Paint Left on Wood. Balance of Paint Split and Disintegrated from Surface] [Illustration: 15. Test No. 6 on 1906 Fence. Surface Checking Only] [Illustration: 16. Test No. 2, 1906 Fence. Sublimed White Lead] [Illustration: 17. Cracks in Test No. 15 on 1906 Fence] [Illustration: 18. Effect of Cracking on Hard Pine, Causing Splitting of Painting Coating] [Illustration: 19. Formula No. 22, Section 23, 1907 Fence. Cracks in Paint Coating, Caused by Cracks in Wood; Coating Otherwise in Good Condition]