1810.] 
Soon as the distant swell was seen to roll, 
Warm ancient wishes reabsorb’d his soul ; 
Warm from his heaving heart a sudden sigh 
Burst through his lips ; he turned bis moist- 
ened eye, 
And thus besought his angel: Speak, my 
guide, 
Where leads yon pass ? and what yon purple 
tid: ? . 
How the dim waves imeblending ether stray ! 
No lands behind them rise, no pinions on them 
lay. 
The Ms spreads, belike, that other unsail’d 
main 
I sought so long, and sought, alas! in vain, 
To gird this wat’ry globe, and bring to light 
Old India’s coast, and regions wrapt in 
night. 
Restore, celestial friend, my youthful morn, 
Call back my years, and let my fame return ; 
Grant me to trace beyond that pathless sea, 
Some liappier shore from lust of empire 
frees 
To find in that fair world a peaceful bower, 
From envy safe, and curst Ovando’s power ; 
Earth’s happiest realms let not their distance 
hide, 
Nor seas for ever roll their useless tide 5 
For netions yet unborn, that wait thy time, 
Demand their seats in that secluded clime 5 
Practical Use of Sliding Rules. 
Ah! grant me still, their passage to prepare, ~ 
One venturous bark, and be my life thy 
care. 
So prayed the heromHesper mild re- 
plies, 
Divine compassion softening in his eyes: 
Tho? still to virtuous deeds thy mind aspires 
And these glad visions kindle new desires ; 
Yet hear with reverence what attends thy 
state, 
Nor wish to pass the eternal bounds of fate. 
Led by this sacred light, thou soon shalt 
see, 
That half mankind shall owe their seats to 
thee ; 
Freedom’s first empire claim its promis’d 
birth, 
Tn these rich rounds of sea-encircled earth. 
Let other years, by thine example prest, 
Call forth their heroes to explore the rest. 
But Jo! the chief, bright Albion bids him 
rise, 
Speed in his pinions, ardour in his eyes, 
Hither, O Drake! display thy hastening 
Sails: 
den, ye passes; and awake, ye gales: 
March thou before him, Heaven-revolving 
sun, 
Wind his long course, and teach him where to 
run 3 
Earth's distant shores, in circling bands unites 
Lands, learn your tame, and oceans, roll in 
light ; : 
Round all the watery globe his flog be 
hurl’d, 
A new Columbus to the astonish’d world.” 
134 
With these observations and selec 
tions, I shall close the analysis of the first 
Your's, &c. 
G. F. Buszy. 
hook. 
Queen Ann Street West, 
Cavendish Syuare. 
To the Editor of the Monthly Magazine. 
SIR, 
HERE are few instruments of greater 
practical utility than the commoa 
sliding rules, for calculations of all kinds, 
and particularly such as daily occur to al- 
most every individual, engaged either in 
business orstudy. Thisinduces me to offer 
to the readers of your Mayazine, a mode of 
expressing the universal formula for using 
this instrument, which for several years 
T have practised, and found impossible 
to be misunderstood by any person who 
is in the least degree acquainted with the 
first rules of arithmetic. 
Considering the accuracy and great ex- 
pedition of these calculations, I ammuch 
surprised that they are not mare fre- 
quently employed, and can only account 
for it from the supposed diiiculty in learn. 
ing the method of using therule. It can- 
not be denied, by those who have trie 
to calculate by the directions commonly 
given, that a good degree of perseverance 
is requisite to follow them; whereas 
nothing is more easy when shown upon 
the rule itself. 
The method then which I practise is, 
to represent in a simple manner, a picture 
of those lines upon the rule (or their re- 
lative position) which are immediately 
concerned in the operation, with the re- 
spective figures and quantities belonging 
to the question: and this is a tolerably 
good substitute for the actual rule, 
The only difficulty remaimng to a per- 
son not at present acquainted with the 
use of the slide-rule ts, learning to read the 
divisions upun the dittesent ines of the 
rule; and: which may be very soon sur- 
mounted by any person that will take the 
trouble to jook at a common shde-rule, 
In general there are four divided lines 
upon the comraon rules, two upon the 
stock and two upon the slide; and for 
distinguishing them they are marked at 
the end with the letters A, B,C, D. 
I shall presume that the learner is able 
to read the divisions; for if not, they may 
‘be learnt by almost ali the co:smon trea- 
tises on that mstrument. 
It remains only to exhibit a few for. 
mule, with examples, to make the sub. 
ject plain, 
Multiplication 
