Such a cloud formation, either Altocumulus Castellanus
or Altocumulus of a chaotic sky, are both described as precursors of thundery weather.
Of particular interest is Boorman's discussion of Petrucci's possible sources of musical repertoire, beginning with Petrus Castellanus
, who was an active partner in preparing the musical material for the press.
The worst part was pronouncing all the meteorological terms, like altostratus castellanus
," fires back Billie with crisp expertise.
In the case of the Petrucci, where, as the editors explain, they have proceeded from the premise that Petrucci's intention was to present texts free of musical error but not necessarily in conformance with the composer's intentions, the editors of the facsimile have worked towards producing a text free of what at the time would have been considered musical errors, correcting what musical slips Castellanus
, Petrucci's house editor, overlooked.
The cloud types shown on the stamp pane are: Cirrus radiatus, Cirrostratus fibratus, Cirrocumulus undulatus, Cumulonimbus mammatus, Cumulonimbus incus, Altocumulus stratiformis, Altostratus translucidus, Altocumulus undulatus, Altocumulus castellanus
, Altocumulus lenticularis, Stratocumulus undulatus, Stratus opacus, Cumulus humilis, Cumulus congestus and Cumulonimbus with tornado (see information sheet that follows this release).
The two cloud types which indicate a move from these warmer regions into cooler surroundings are Altocumulus Castellanus
(one level) and Altocumulus of a chaotic sky (2 or more levels).
140) Tanner, 1:489, 491; Castellano, 354v, 376v (Albertus Castellanus
Venetus, Ordinis Praedicatorum auctor).
Working in collaboration with the Dominican friar Petrus Castellanus
, who acted as editor and compiler, Petrucci produced a volume entitled Harmonice Musices Odhecaton A, which contained ninety-six polyphonic works (mostly chansons) by a variety of popular composers, including Alexander Agricola, Antoine Busnoys, and Jacob Obrecht.
Michael Mogil, Rockville, MD Altocumulus castellanus
, (C)1992 Arjen & Jerrine Verkaik/SKYART, Elmwood, Ontario, Canada Altocumulus lenticularis, (C)Carlye Calvin, Nederland, CO Stratocumulus undulatus, (C)Richard A.