Body size and shape of five native horses of Tokara, Taishu, Amami, Ryukyu and Misaki horse which have been bred in the Kyushu region were studied by multivariate analysis with principal component analysis and cluster analysis for thirteen body measurements of those horses.
1. The first principal component with size factor contributed to the separation of Misaki horse from other four native horses.
2. The second principal component with shape factor contributed to the separation to the sex differential in Tokara, Taishu, Amami and Ryukyu horses.
3. The third principal component with shape factor contributed to the separation to the sex differential in Misaki horse.
4. Five native horses were classified in two groups, Misaki and other four native horses, by cluster analysis.

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A survey was conducted to clarify the relationship between the state of cows in the physiologic non-pregnant condition and the reproductive efficiency in the following breeding season. In it, 50 cows of the Japanese Black breed kept on farms in the jurisdiction of the Hanamaki Livestock Hygiene Service Center, Prefecture of Iwate, were examined whether they met a total of 38 categories of 15 items or not.
The results of this survey were analyzed with method quantification model No.3 and classified into 5 groups of categories. In consequence, a possibility was noticed that the categories of some items might be related with the reproductive efficiency in the following breeding season. Furthermore, when the same results were analyzed with method quantification model No.2, it was very likely that the reproductive efficiency in the following breeding season might possibly be anticipated from the state of cows about 30 days after parturition.

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To obtain information on the physiology of mice, the amount of spontaneous motor activity was measured in these animals. Then, its periodic rhythm was examined by time series analysis.
Spontaneous motor activity was measured chronologically in three groups of mice by means of three apparatuses, Animex (group A), Wheel (group W), and Photo-Cell (group P), respectively. When its amount was subjected to correlogram analysis, the spontaneous motor activity formed the vibratory wave of a circular model consisting of several fluctuations of periodic variation. This vibratory wave composed of a large wave with its peak at 24 hours of the dark phase, regardless of the apparatus used, and such a small wave with its peak at 12 hours of the light phase as shown in groups A and P. These peaks appeared repeatedly in 24 hours and were considered to present a diurnal rhythm. Moreover, a small wave was observed in groups A and W. It seemed to appear at 24 hours' intervals at about the time of transition into the dark or into the light phase.
Periodic components were examined by power spectrum analysis. The highest spectrum was observed in groups A and P at about 4 hours and in group W at about 2 hours. Small spectra were noticed in groups A and P at about 2 and 6 hours and in group W at about 6 and 8 hours.
It was interpreted that in the spontaneous motor activity of mice such vibratory waves as induced at there periodic times were synthesized and united into a diurnal rhythm.
From the results mentioned above it was concluded that a simultaneous use of correlogram analysis and power spectrum analysis was an effective means for time series analysis on spontaneous motor activity in mice.

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