40 LOTSY AND KUIPER, A PRELIM. STATEMENT OF THE RESULTS OF MR. 
Crosses of Gallus gallus X G. Sonnerati. 
” ” ” ” X Silky. \ 
+à „ Partridge colored Wyandotte’s X White Leghorns 
(inheritance of egg-colour). 
2: 
3. » ” „ » XG. varius. 
4 
5 

6. Crosses of Anser hyberboreus X Branta canadensis. 
7 « = 2 = X Cygnopsis cygnoides. . 
8. 3 „ Lepus cuniculus X Lepus europaeus. | 
9 5 5 5 x domesticus X Lepus europaeus | 
10, oe » various forms of Lepus cuniculus domesticus. 
11. + „ of white and piebald ferrets. 
12 + » Wolf x Dog. 
13; EN » Jackal X Dog. 
14. testing of the purity of Teckels. 
laren hennen to Mounds. | 
16. crosses with belted goats. | 
17. + > belted cattle. 
18. x of domesticated pigs X wild boar. 
19, > of Italian and ,, Dutch” bees. 
"20. < of Horse X Ass and the reciprocal crosses. 
‘21. Inheritance of eggproduction in Poultry. 
22.. Tadorna Tadorna X Anas boscas. 
23. White Duck X Wild Duck. 
24. Canary X several Singing birds (siskin, linnet, thistle-finch a.0.). 
25. Common Turtle X Barbary Turtle. 
Several of these experiments have not been continued so far 
as to lead to any result of importance. About the nos 12, 13, 14, 
16, 19, 22 and 23, we cannot announce any further communication. 
It will suffice to have mentioned them. About the nos 1—3; 17; 
6, 7, 24, 25 preliminary papers have been published already by 
H. N. KooïMAN and the junior author of this paper, who were 
‘successively Mr. Houwınk’s scientific assistants. viz: 
10. Over de beteekenis van het kruisen van individuen, behoo- 
rend tot verschillende Linné’sche soorten, voor het ontstaan 
onzer huisdieren (On the importance of crosses of individuals, 
belonging to different Linnean species, for the origin of our 
domestic animals) by H. N. Kooıman. 
Ardea 1918 pg. 108—114. (regarding. experiments 1—3). 
