148 



KNOWLEDGE 



[July 28, 1882. 



WEATHER CHARTS FOR WEEK ENDING SUNDAY, JULY 23. 



Si-.VDAY, ICth, 



Wkdnespay, lOrn. 



TuuusDAY, 20tii. 



Friday, 21st. 



Saturday', 22.nd. 



Sunday, 23nD. 



In tlie above charts the (lotted lines are " iscbars," or lines of equal baromctricnl pressure, the values which they indicate beinp 

 gi^cn in fi>,'urc8 at the end, thus — 30-4. The shade temperature is given in figures for several places on the coast, and the weather i» 



recorded iu words. The arrows fly with the wind, the force of wliicli is shown by the number of barbs and feathers, thus: — *- 



liglt ; ^ , fresh or strong ; > ^ , a pale ; 5* »■ , a violent gale ; © signifies calm. The state of the sea is noted in capita* 



letters. The • denotes the varitus stations. The I onr for which each chart is drawn is G p.m. 



;^rirnrr »inti ^xi ^Dosdip. 



It has been discovered tliat transitory colour-blindness is pro- 

 <Iacc<) by a stay of a few hours among snow-fields illuiniiiateU by 

 the sun, all artificial lights appearing green for a sliort time. The 

 exhaustion of the retina for tlie perception of red is more prolonged 

 than for other colours. 



Pillt.Al)Ki.i'liu kills her ilogi, not by drowning thorn in a cage, but 

 by introtiucing carbonic-oxide gas into an apartment which, after 

 the ilogs have been driven into it, is made air-tight. One hundred 

 can lie killed in this manner at once, and their death is quick and 

 painless. 



ToarEB City, Dakota, ha<i a water supply from a remarkable 

 artesian well. When the earth was penetrated 5(50 feet, salt water 

 was obtained. Twenty feet farther down a gravelly stratum was 

 stmck, yielding also salt water. After baring down COl feet fresh 

 water, mixed with (luicksand, came u|). Now, from a depth of 675 

 feet, there is a flow of pure, potable water of steadily increasing 

 qoantity. 



Poprr.ATi(iN OF Jap.i.s. — The latest census gives the population of 

 Japan as 3e.a!',8,994— males, 18,42.3,274; females, 17,9.35,720— an 

 ! of 3,000,000 since the last previous census in 1873. This 



inciin«->, however, is in part attribiitod to the growing accuracy m 

 collectmg returns, the earlier estiiniites having been too low. Tho 

 population of the tlirco principal cities is thus distributed : Tokio,. 

 979,084 i Kioto, 830,829 ; Osaka, .';87,9!)8. 



TliK University at Toronto, Ont., admits women, and in his com- 

 mencement address Chancellor Ulake spoke very favourably of tho 

 experiment. In the cliis-i of three years' standing tlioro arc three 

 women, and in tho next yoimf,'ci- live, while of tlii^ fn'Hhiiicii no leas' 

 than fortvfonr are fcni.'ilca. Moreover, I lie girls hold tlioir ovTiv 

 against the boys in siljolarship, niid get j.lenty of honours. The 

 Chancellor thinks that in a littlo time female teachers will be intro- 

 duced. 



Two New Ocean Cables.— Under tho Bill which has passed 

 Congress incorporating tho llalthnon- and Ohio Cable Company, 

 the railroad company ii.iiir'in|il;,lr. irti.nocliato preparations for 

 laying two ocean cahlcx^ li . |i..l.i I. that one point of landing 

 on the American side will I ■ ' ' 1 I: n. or between that city and 

 New York, and tho otlnr n n \.„i,,[k, V'a. Tho latter cable is 

 likely to belaid rid Borniiida arjd I ho .\/.oro» to the coast of Portugal, 

 and tho northern line will prolinhly bo laid to England. Pre- 

 liminary examinations and prei)aratioii9 are in active progress. 



Insect posts, like men, inako their way chiefly from cast to west. 



With tho exception of tho grajio phylloxera and the Colorad.j 



I potato-bestle, Europe Jias not received from America any con 



