New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1872-10-23

dress white eravat and a-they have good
taiiors I'm London lie commences TO speak with what al
mos like abruptness because he right on from
tho plaee whore he left of in the preceding lecture. Ho
folds his arms favOrite gesture and says; The soap
hubble excited the mind OF Newton all manner OF re-
| aections Why should it be cooredi Why should
the coors vary Why In order 10 possess
color. must it be blown out thin" With arms
st folded he pauses breathless second after THIS
Newtonian conundrum. / did MT know the wherefore
40 under my breath said Why ." in italics, like MISS
Jamie strathmere, and waited. The lecturer remarked
that he wanted to get into the brain Of Newton 10
use an expression OF Emerson'si from whon'
by the way, he quotes quite frequently 90,
with fine and clear analysis, no followed
the thought Of Newton, which resulted III
the famous Eewtons rings Then this wondermaker'
superb scientific conurer that he Is, displayed 10 us ,o
image Of these famous rings upon the sereen te en
in the house having been turned low We 81" 'oui ~
white light, with wonderful iris hues Drhliaht anu
bewitching and elusive as the CLINT of prismahc hre IN
an OPAL Then in red light when the rings consisted
alternately OF light and darkness; then IN DUO nshI
The solution Of these rings difficulty when Newton
did not conquer. He constructed an ingenious sonco
10 account for them but lacked the prophetic VISION Oh
q true theory. -
Youngs theory Of undulaton supplied this lack IL
had its roots in the world of experience IL was sug
gested by the waves OF the and Of the air In Illus
tration OF this theory Prof. Tyndal introduced expert
ments OF wonderful beauty. He explained waves by
means Of the diagrams on the blackboard, renlafKlhg
that he enved Lowell Institute that slate for he had
none so good at home. He claimed that the waves OF
light possessed the characteristics as those OF
water; 80 that the well known became the easy expana
ton Of the almost unknown. He performed some e1-
ceedingy pretty experiments with magnets Ringing
iron filings on piece Of glass underneath which was
magnet and throwing the image upon the screen Ihen
on Earring the plate the iron filings were seen to arrange
themselves beautiful magnetic curves around the
poles OF the magnet They moved with slow rhy thmea
grace If to the law Of some unheard music and one
hardly wondered hear that Faraday might be SAID 10
have spent his life in the contemplation Of these effects
You had got by this idea OF polarity, and OF
the definite structure produced by its action ON PARTICLES
BY this molecule molecue the form OF crystal Is
| built up A solution Of salammoniac was
| poured upon the glass plate, and made 10
| eyaporate the faithful screen reproducing, like
| some magic Mirror the whole performance
Jack Frost himself never wrought devices more e1-
ouiste ON any windowpane. Soft, feathery crystals
shot out in every direction, and halfsubdued eamor OF
delight filed the hall This followed by an expert
ment with acetate of lead decomposed by current OF
electricity On the you reflected the images
of the poles OF the battery immersed in the liquid In
stanty of the wires shot out wonderful frond
like branches of most exquseshapes, only to fan away
when the current reversed while new shapes Of
beauty lowered about the other pole These the most
fascinating the numerous experiments OF the evening
They received by the philosophical with true scen
dc enthusiasm; with delight apprcciatye as well as adj
miring The unnsucted portion OF the audience liked
them no less and watched every shadow the screen
with the wdeeyed rapture Of childrenata magicantern
show. There various funny little contTcemps. as
when Professor cried like Ajax, FOR light TO his As
sistant and the mistaken youth who managed the hall
gas turned "A whole flood Of IT, and spoiled an expert
ment didn't mean you" the Professor said, with
funny twinkle i'm his eyes. and instantly We were
in the dark again. There is such thing as doing
justice by description 10 Prof Tyndalls manner. It is
so pleasant coloquia free from arrogance so fu
OF personal enthusiasm il the wonders he displayed
were as new 70 him 10 the rest OF us He makes sci
ence easy. coaxing his audience over hard places by
promises Of untold beauties 10 In short he is the
very beauidea of a scientific lecturer. The old men,
who CO. year after year. 10 the Lowell Institute lectures
apparently the hall 10 them good quiet
place in which TO take nap al keep awake to hear the
lively IrshEnghshman, and behold the beauties with
which he easts attentive eyes, Nightly the throngs in
crease and critical and uncrhca saw Of every last lee
ture This Is the best. so far" l.. C. NJ