BOTANY AND ZOOLOGY OF CHINA 103 



In Manchuria it grows in Liaotung, in many places of 

 Shengking province, in Kirin on the Lung-shou-shan, and 

 near the Ya-lu-kiang river. In 1919 this tree was found by 

 Mr. A. D. Woieikow at Siao-ling C. E. K. Station in 

 North Manchuria. In 1920 this tree was observed by the 

 writer on the mountain sides round Mao-erh-shan, and on 

 other stations of the C. E. K. Two forms were examined 

 in this district. Micromeles seen in North Manchuria were 

 trees with straight branches. The leaves (see PL I, Fig. 1) 

 bright oval, bi-serrate, short-pointed, with 8 pairs of veins. 

 Cymes contains 5-10 flowers. Flowers are 1-1.5 cm. in 

 breadth, and white coloured. One variety had fruits which 

 were depressed globose, red, 9-11 m.m. in breadth and 8-9 

 m.m. in length (see PL I, Fig. 1-2). The second had oblong 

 red fruits, 10-13 m.m. in length and 6-9 m.m. in breadth 

 (see PL I, Fig. 3 and 5). When ripe the fruits are red; 

 pericarp is reddish, juicy and sour; the fruit has four seeds. 

 They are not edible, but the seeds are liked by the birds. 



XLV. — Experiments in Sericulture in North 

 Manchuria. 



As is known in the Sheng-king province of Manchuria, 

 the wild and common silk- worms are cultivited. In the 

 Kirin and Hehlungkiang provinces these industries are almost 

 non-existent. 



As shown by the interesting experiments in silk worm 

 culture made by Mrs. W. W. Agourow at Shuang-cheng-ting 

 in 1913, the common silk worm can be fed on the leaves 

 of the local wild mulberry- trees. 



The egg (grains) of the silk worms for the experiments 

 were obtained by Mrs. W. W. Agourow from Chefoo and 

 from the Caucasian silk-worm experimental station. Owing 

 to the early hatching of the caterpillers and the late appear- 

 ance of the leaves on the local wild mulberry-trees, the 

 young caterpillers were fed at first on the leaves of the 

 Scorzonera hispanica L., and when the local leaves appeared 

 the silk- worms were then fed on them. 



The following four varieties of cocoons were obtained 

 by Mrs. W. W. Agourow : 



1. — The large light yellow cocoons 3.5-4.2 cm. in length 

 and 1.7-2 cm. in breadth (see PL I, Fig. 1). This variety 

 is of Caucasian origin. 



2. — Cocoons of middle size, of bright yellow colour, 

 3-3.5 cm. in length and 1.5-1.9 cm. in breadth (see PL I,. 

 Fig. 2). This variety is also from the Caucasus. 



