The San Francisco call., 1898-07-24
Mars
 to M Study 3' ' j
 the Wonderful Phenomena
Phenomena

N ART of the surface of Mars Is
 undergoing a change that is baf-
 fling our scientific men. This is
 the apparent movement of a
 large surface of the planet over
 another part of it, just as the sand out at the ocean beach blows in and covers a certain part of Golden Gate Park if it is not kept in check by proper barriers. For this similarity the locality on Mars has been named the Sand Sea" by astron- omers, but there Is no telling for cer- tain what the true nature Of the local ity Is.
 The famous astronomer, Herr Karyll of Vienna, has given years of study to this phenomenon and looks upon it as more important than the canals, be- cause he thinks it more permanent. !" Herr karyall has just published a pa per on this subject, which is attracting attention all over the world. It is a most learned document, that goes deeply into details and explains many points that have not appeared clear before. Referring to the Sand Sea Herr Karyll says:
 Among the changes on the surface of -hAdASt hltlIltI we IeIeT 10 the very slow periodic deformations of known points on the planets surface or the variations in the so-called canals and seas, which have been the cause in recent times of so many attempts at explanation, there Is one appearance that is particularly worthy of note. It is the shifting of the east coast Of the Sea of Sand" on the surface of Mars, which also bears the name of the Great Syrtis." This eastern coast has shifted more and more from year to year, as IS shown in the diagram, as proved by oDserFatons of the greatest reliability mace since 1877 by the most eminent as- tronomers, such as Schiaparelli in Milan, rSFeen In Madeira Stanley Williams in est Brighton, Lowell in Flagstaff, An tonlado in Juvisy, Brenner in Lussinpic- colo, Walter Gall in Sydney, Molesworth in Ceylon and others.
 Between the years 1884 and 1877 this sea was very small, and on Its left side appeared something resembling q lake tAe Moeris Lake-which was seen to be connected with the aforementioned body Ds d dark spur. Toward 1877 the eastern CoasI or the sea" began plainly to ad- N"Hce' Between 1879 and 1882 the coast hau traversed half the distance that sep- 1l 1oo, ''eu 'he sand Sea from the lake. From 1oo7 so 1eD 1t neared the lake rapidlv. -iarat at the last opposition of the DeiAibeIt loJb, MOerfg appeared to oe ehuFeiy engulfed in the Sand Sea" ',r4t, ana was s.a merged in it. The most note worthy f&et' however, is that not the sea alone LOOK up the westward movement put the lake grew smaller and retreated toward the right. The real distances in- Na,eS nol,eq III T, these movements may be esti nast to I ne movement of the coast from east 10 west was about 500 niles ,.h,i, iTi,, the extent ol the change from norfb ''ito to south must nave reached tba ereef amount or l5OO miles, embracinFJ S r6eaioo i9ne tWIce as large as Germany or TTEanca % : iois Mars differs in many respects fro,,, ot or the earth, besides the wellknor,o 'ufse dif Ierences Tn the length of the 6e, VII 4iio tho CnanBe or seasons and the alternsf fJo,,s ldS S
 With the same certainty we nav o,so assume that Mars will give not may nay, aiso s own astronomers but those of e,,nry UiiIy cur Si ture generation plenty of trouhia " e- Iu- we completely understand is r1,a,1 peLoIe characterIstlcs. The approacbinop payslcal ton of Mars will give us a S new Vpp0sr- dpnor- tunity to observe and measure oPpor- tb- changes. uie these
 In order to comprehend tha ro,.o ment and extent of this so-calIed i',Us eo,ed deluge 1t is only necessary to inaeina 1i,1e