An extreme variation of the short arm of no. 21 chromosome in the mother of a 21/21 translocation mongol is described. The possible relation between the very long short arm of chromosome no. 21 in the mother and a centric fusion type of translocation mongolism in the offspring is discussed.

During the past year the Museum's collection of Islamic art has been greatly enriched by several important purchases, gifts, and bequests. The bequest of twenty ceramics and two Persian rugs by Horace Havemeyer has already been discussed in a separate Bulletin article (May I957). One of the most notable additions was the Cora Timken Burnett Bequest of Persian miniatures and other art objects, w...

L’ouvrage de Thomas Allsen sur les perles vise a etudier leur usage dans l’Empire mongol. Il s’agit malheureusement du dernier livre que T. Allsen, cet eminent specialiste des Mongols, nous donne lire car il est decede en fevrier 2019, peu avant la publication The Steppe and the Sea. Pearls in Mongol Empire. Ce s’inscrit continuite avec recherches anterieures l’A. interactions politiques, cultu...