Horlogiographia optica. Dialling universall and particular: speculative and practicall. In a threefold præcognita, viz. geometricall, philosophicall, and astronomicall: and a threefold practise, viz. arithmeticall, geometricall, and instrumentall. With diverse propositions of the use and benefit of shadows, serving to prick down the signes, declination, and azimuths, on sun-dials, and diverse other benefits. Illustrated by diverse opticall conceits, taken out of Augilonius, Kercherius, Clavius, and others. Lastly, topothesia, or, a feigned description of the court of art. Full of benefit for the making of dials, use of the globes, difference of meridians, and most propositions of astronomie. Together with many usefull instruments and dials in brasse, made by Walter Hayes, at the Crosse Daggers in More Fields. / Written by Silvanus Morgan.

ERRATA.

REader, I having writ this some years since, while I was a childe in Art, and by this appear to be little more, for want of a review hath these faults, which I desire thee to mend with thy pen, and if there be any errour in Art, as in Chap. 17, which is only true at the time of the Equinoctiall, take that for an oversight, and where thou findest equilibra read equilibrio, and in the dedication (in some Copies) read Robert Bateman for Thomas, and side for signe, and know that Optima prima cadunt, pessimas aeve manent.

pag.	line	Correct.
••	10	equall lines
18	16	Galaxia
21	1	Galaxia
21	8	Mars▪
24	12	Scheame
35	1	Hath
38	8	of the Tropicks & polar Circles
40	22	AB is
44	31	Artificiall
46	ult	heri
49	4	forenoon
63	29	AB
65	11	6
80	16	BD
92	17	Arch CD
9	ult	in some copies omit cen∣ter
126	4	happen
126	6	tovvard B▪
127	26	before
126	prop. 10▪ for sine read tang. elev.

• Figure of the Dodicahedron false cut pag. 4
• LF omitted at end of Axis 25
• For A read D 26
• In the East and West Diall A omitted on the top of the middle line, C on the left hand, B on the right 55
• Small arch at B omitted in the first polar plane 58
• For E read P on the side of the shadowed line toward the left hand I omitted next to M, and L in the center omitted 81
• K omitted in figure 85
• On the line FC for 01 read 6, for 2 read 12, line MO for 15 read 11 96
• A small arch omitted at E & F, G & H omitted at the ende of the line where 9 is 116
• I & L omitted on the little Epicicle. 122