Page 709. " the gates of the sanctuary-screen "
The Iconostasis in the Cathedral of the Annunciation, Moscow
Public DomainThe Iconostasis in the Cathedral of the Annunciation, Moscow

 In Russian Orthodox churches the altar (or sanctuary) is usually separated from the rest of the church by a sanctuary screen, also called an iconostasis. These are covered in icons and highly decorated. In theological terms, the iconostasis acts as a link between the heavenly inner space of the altar and the holy space of the nave.

Page 709. " under his dalmatic "
 The translators have chosen the word 'dalmatic' to describe the priest's dress; this is an item of liturgical costume worn by priests in the Western Churches, such as the Anglican and Roman Catholic faiths. The Eastern Orthodox equivalents of the dalmatic are the sticharion and the sakkos. It is likely that the priest here would have worn the latter. A sakkos is a patterned vestment with wide sleeves, usually made from a rich brocade. Both the dalmatic and the sakkos are descendants of Byzantine liturgical dress.
Page 711. " his purple velvet skufya "
Ilia II, Patriarch of Georgia, wearing a purple skufya
Creative Commons AttributionIlia II, Patriarch of Georgia, wearing a purple skufya - Credit: Diaoha
 A skufya is the headgear worn by Orthodox priests as part of their vestments. In the Russian church, it is a pointed cap, usually red or purple in colour.
Page 714. " l'Russe Besuhof "

Pierre has had to bend the French language to breaking point in order to achieve this magic number. L'Russe is not real French, as the vowel should not be dropped in front of a consonant such as R.

Page 722. " into the Kremlin Square "

Cathedral Square, Moscow
Creative Commons AttributionCathedral Square, Moscow - Credit: Superchilum

 Moscow's Kremlin was the old seat of government in Russia. It became the heart of government again in the twentieth century, under the Bolsheviks. The word kremlin means fortified complex; they are found at the heart of all historic Russian cities. In Moscow's case, the huge kremlin is a fortified city-within-a-city containing palaces, churches, and armories. The Kremlin Square is also known as Cathedral Square. As it lay at the heart of the Kremlin, it was considered the symbolic heart of Moscow, and therefore of Russia itself.