In SMMJ 20 (187v), at the end of the Psalms, appears a short hymn on Jesus attributed to Severos. The same text also occurs (probably among others) in DIYR 202, a liturgical manuscript dated 1477, at the beginning of the Rite for the Confirmation of Deacons (77r-78r), but there without any mention of Severos. The handwriting of the latter is more careful, so I give images from that manuscript here.
DIYR 202, ff. 76v-77r
DIYR 202, ff. 77v-78r
The ending taw-alaf in some cases is written in a unique way that I’ve not noticed before, in which the scribe connects two letters not normally connected.
DIYR 202, f. 77v, line 11 (see also line 5)
It’s not a particularly moving piece, but it’s short and easy, and so it may be a welcome sample for Syriac students to devote a few minutes to.
hmmlorientalia 
Can we find its (Unicode) text somewhere, or must I myself transcribe this “easy” sample ?
Richard, the reading of the manuscript and the transcribing are part of what makes it a good learning exercise! Have fun!
Dear Adam, Your post on the short hymn by Severos is sung every Sunday in Syriac Orthodox churches around the world and also in our monasteries on Wednesdays, Fridays, Saint days, and any time we do the liturgy.
This is called the Responsory of Mor Severos.
The pages you have posted look like the Divine Liturgy of Saint Jacob (James) with instructions for the priest in red lettering.
As a priest I sing this in Syriac with the deacons as we go around the altar. I kiss each corner of the altar as I carry the censor.
Poosh Bashlomo
Father Barhanna (Dale A. Johnson)
Adam, If I might trouble you again for dimensions?
I’m working on an early fifteenth century codex – nealy equalised parchment. Probably (imo) compiled in the Venetto c.1426-30. Some sections may possibly be copied from exemplars on paper. folios 225 x 160 mm. I’m hoping to find it was a standard stationer’s size, not only in continental Europe.
No problem. DIYR 202 is 13.8x10x3.7 cm.