M. Blundevile his exercises containing sixe treatises, the titles wherof are set down in the next printed page: which treatises are verie necessarie to be read and learned of all yoong gentlemen that haue not bene exercised in such disciplines, and yet are desirous to haue knowledge as well in cosmographie, astronomie, and geographie, as also in the arte of navigation ... To the furtherance of which arte of navigation, the said M. Blundevile speciallie wrote the said treatises and of meere good will doth dedicate the same to all the young gentlemen of this realme.

To the Reader touching the order of finding and correcting the faults escaped in printing.

FIrst, I pray you vouchsafe with your penne to correct the numbers of the leaues of these bookes, which num∣bers are not in some leaues trulie set downe, that done, for the rest of the faults resort to the Table follow∣ing, which consisteth of fiue col∣lums, whereof the first on the left hand sheweth the true number of the leafe, the seconde collum sheweth the page both first and second: the third sheweth the line: in counting whereof you must begin at the head of everie page, and so proceede downward, leaving no printed line vntold, though it contayneth but one word, omitting notwithstanding such lines as doe containe the title of any chapter, so shall you bee sure to finde any fault mentioned in the sayde Table, and the correction thereof hard by it on the right hand: for the fourth collum of this Table containeth the faults, and the fift collum the correction thereof: by helpe of which Table you may correct your owne booke, where need is, in setting downe the correction in the margent right a∣gainst the fault found.

Errata.

Leafe	Page	Line	The faultes.	The Correction.
1	2	27	for, 4270570. read	43 20, 70.
2	1	15	for, what, read.	Why.
3	2	5	for, calling, read	Culling.
5	2	9	for, squarewise, read	squirewise.
10	1	32	for, limediate, read	immediate.
24	2	33	for, the former 4. read	the former doubled 4.
29	1	29	for, 2650. read	2550.
32	1	4	for, the productes, read	the particular productes.
32	1	27	for, containe manie, read	containe so manie.
32	2	31	for, ouer 1. read	over 1‴.
32	2	32	for, appointing to his, read	appointing to the product his
34	1	1	for, the nūber must be 24. r.	the number 24. must be
37	1	18	for, 53″. read	50″.
42	1	4	for, 10. read	16.
42	2	23	for, 20. read	19.
53	1	16	for, 890. read	899.
56	2	13	for, 23. degr. 38. read	23. degr. 28′
131	1	30	for, precession, read	precession.
137	2	13	for, euer the heauen, read	everie heaven,
139	2	3	for Anges, read	Auges.
169	1	6	for returning, read	returneth.
173	1	16	for, or, read	and.
181	1	32	for, 2160. miles, read	2160 b. miles.
193	2	6	for, Iland, read	Island.
199	2	5	for, Aphiscii, read	Amphiscii.
210	1	31	for, before fastned, read	before taken.
215	2	2	for, the hour of the north, r.	the houre of the night.
216	2	2	for, dawning twilight, read	dawning and twilight
217	1	28	for, the Celestial globe, read	the terrestriall Globe.
227	2	20	for, meere lately, read	more lately.
229	2	7	for, in a great sph are, reade	in a right spheare.
233	1	32	for, the 7. of Scorpio, read	the 8. of Scorpio.
236	2	16	for, 30. deg. 47′. of, read	the 3. deg. 47′. of
249	1	22	for, Equinoctionall, read	Equinoctiall.
300	1		In the figure, for 1. ♉. read	♑. 1.