486     M .  F.  Zollner  on  the  Origin  of  the  Earth3 s  Magnetism, 
ils  sont  fortement  inclines.  Nous  n'avons  pas  tenu  compte  de 
cette  particularite,  et  les  exceptions  paraissent  plus  nombreuses. 
"  2°.  Une  autre  irregularite  provient  de  ce  que  l'activite  solaire 
n'est  pas  actuellement  la  meme  dans  les  deux  hemispheres,  et  il 
arrive  que  ^hemisphere  le  plus  actif  entraine  la  circulation  au 
dela  de  la  limite  equatoriale  (com me  il  arrive  chez  nous  pour  les 
vents  alizes),  et  il  en  resulte  que  Pequateur  ne  divise  pas  en  deux 
regions  egales  les  zones  de  circulation. 
"3°.  Enfin  il  faut  tenir  compte  de  ^influence  des  taches, 
qui  troublent  considerablement  cette  circulation." 
These  facts,  derived  by  Secchi  from  numerous  and  careful  ob- 
servations, are  of  no  importance  to  M.  Faye ;  for,  in  a  commu- 
nication to  the  Paris  Academy  which  I  received  whilst  this  paper 
was  being  printed,  M.  Faye  says  as  follows : — 
tl  C'est  ainsi  qu'on  a  cru  recemment  trouver  une  indication 
favorable  a  l'existence  de  ces  courants  dans  les  directions  si 
variees  des  jets  d'hydrogene  incandescent  emis  par  la  chromo- 
sphere  
•  "D'ailleurs  la  seule  inspection  des  dessins  deja  publies  en 
grand  nombre  suffit,  aux  esprits  non  prevenus,  pour  faire  evanouir 
toute  idee  de  courants  generaux  dans  la  chromosphere"*. 
In  order  to  prove  that  the  suspicion  expressed  against  Father 
Secchi,  that  he  was  prejudiced  in  his  observations,  and  belonged, 
as  regards  the  currents  in  the  solar  atmosphere,  to  the  "  esprits 
prevenus,"  is  without  foundation,  I  take  the  liberty  to  state  that 
I  received  in  the  month  of  April  a  letter  from  Father  Secchi, 
dated  Rome,  April  28,  1871,  in  which  he  requests  me  to  send 
him  the  above-mentioned  paper,  "On  the  Law  of  Rotation  of 
the  Sun  and  the  large  Planets/'  in  which  I  had  again  given  in 
detail  the  theoretical  deduction  of  that  law  of  circulation  of  the 
solar  atmosphere  the  physical  causes  of  which  were  first  deve- 
loped in  my  paper  of  December  12,  1870  f. 
The  words  in  question  of  Seech Ps  letter  to  me  are  as  follows  : — 
"M.  Schellen  de  Cologne  me  donne  la  nouvelle  que  vous  avez 
fait  un  travail  tres-interessant  sur  la  rotation  du  soleil.     Comme 
*  Comptes  Rendus,  vol.  Ixxiii  p.  1128.  M.  Faye,  in  a  discussion  of 
my  paper  "On  the  Law  of  Rotation  of  the  Sun  and  the  large  Planets," 
declares,  "  Suivant  M.  Zollner,  le  soleil  bien  loin  d'etre  a  l'etat  gazeux, 
est  entierement  solide,  sauf  une  mince  couche  liquide,  semblable  a  de  la 
lave  en  fusion,  qui  lerecouvre  entierement."  I  take  the  liberty  to  say  that 
this  view  of  the  condition  of  the  sun  has  never  been  expressed  by  me,  and 
that  the  above  declaration  of  M.  Faye  can  only  have  resulted  from  a  super- 
ficial reading  of  my  paper.  Evidently  all  arguments  which  M.  Faye 
brings  forth  against  my  theory  based  on  the  above  false  view  attributed  to 
me  fall  to  the  ground. 
t  Proceedings  of  the  Roval  Saxon  Society  of  Sciences,  December  12, 
1870. 
