DR.. Mackey's Navigator.
{"newspaper_name": "Portland gazette and Maine advertiser.", "edition": "01", "page": "p4", "byline": ""}
{"character_count": 1444, "word_count": 230, "ccnet_language_score": [0.8658000230789185], "ccnet_perplexity": [1062.800048828125], "fasttext_language": ["en"]}
THOMAS CLARK, Bookseller,


Il Portland, Dhsnc...WilI shortly publish
an improved edition Of Dir. MAcKAY's COM
PLETE NAVIGATOR Untitled, The american
Comhiete Navigator, and Seaman's Daily Assist
a1t being an easy and familiar guideto the The
ory and Practice Of Navigation containing all
thenecessary Tables and Rules, with demonstra-
tons, and illustrated with several appropriate
Ehgravings ;=-being an improved edition Of
the Complete Navigator, published by An
DREW MAcKAY, L. L. d. r. R. 5. Ed. Seat
London, A. ID. leO4-revised, corrected, and
considerably enlarged, by several gentlemen
of Information, and particularly adapted for
the use Of American Seamen."


In DR.. Mackay's work, some hundreds Of
errors are detected in all the treatises on navi-
cation extant The work in the press is pas
sing through complete revision by several
gentlemen, who will examine every part of il,
and more especially the tables, which are more
numerous and extensive than can be found in
any work upon the subject And the publish
er fatters himself that it viii issue from the
press 4rithout a single error


As the most approved publication upon the
theory and practice Of Navigation (except DR..
Mackay'S) contains great number Of mistakes
particularly III the tables) which might prove
fatal 70 the mariner, it is confidently believed,
that the treaticc how Offered to public patron
age, will supersede every other work Of the
kind. Dec. SO, 1905.