Supplement to " Knowledge & Scientific News," Frbriiaru. 1907- 



<R.7.ri.,(uc.''.ii"»i Vol. II. "f III- I'lil'hcalii'ii- oi llir Y.rket Uhvrrolorii nt lltr Vnirmilii of Chic,„,i,.., 



Nebvilosity in. the PleiaLdes. 



