+------+---+-----------+-----------+--------------------------------------+ | | | Mother. | Father. | Grade of openness in offspring. | |Serial|Pen| | | | | No. |No.+----+------+----+------+--+--+--+--+---+---+---+----+----+----+ | | | No.|Grade.| No.|Grade.| 1| 2| 3| 4| 5 | 6 | 7 | 8 | 9 | 10 | +------+---+----+------+----+------+--+--+--+--+---+---+---+----+----+----+ | 1 |727|2457| 9 | 831| 10 |..|..|..|..| ..| ..| ..| .. | 5 | 4 | | 2 |727|2459| 10 | 831| 10 |..|..| 1|..| ..| ..| 1| 3 | 7 | 3 | | 3 |727|2494| 9 | 831| 10 |..|..|..|..| ..| ..| ..| .. | 1 | 4 | | 4 |727|3105| 9 | 831| 10 |..| 1|..| 1| 2| 1| ..| 5 | 7 | 3 | | 5 |727|3106| 9 | 831| 10 |..|..|..|..| ..| ..| ..| .. | 2 | 1 | | 6 |803|2457| 8 |7522| 9 |..| 1| 1|..| ..| 2| 4| 7 | 10 | 3 | | 7 |803|2459| 10 |7522| 9 |..|..|..|..| ..| ..| 1| 6 | 4 | 2 | | 8 |803|3105| 9 |7522| 9 | 1|..|..|..| 4| 2| 2| 7 | 3 | 7 | | | +--+--+--+--+---+---+---+----+----+----+ | | Totals (119) | 1| 2| 2| 1| 6| 5| 8| 28 | 39 | 27 | | | |\----\/---/| | | | | | | | | Percentages | 5.3 |5.3|4.4|7.1|24.8|34.5|23.9| +------+---------------------------+-----------+---+---+---+----+----+----+ Table 45 shows that the prevailing grade in the offspring of pure Houdans is 9; that grades 8 and 10 are also extremely common; and that lower grades, even down to 1, may occur, but these are much less common. We have next to consider the grade-distribution of the offspring of the narrow mated with the wide nostril. TABLE 46.--_Distribution of the frequency of the different grades of "openness" of nostril when one parent has the open nostril and the other the closed._