The Editor of the SCIENTIFIC AMERICAN acknowledges, with much
pleasure, the receipt of original papers and contributions upon the
following subjects:
On Rheumatism. By A.R.E.
On Postage Stamps. By E.B.
On Boiler Explosions. By G.B.B.
On Reaching the North Pole. By J.H.S.
On Heating Street Cars. By P.T.
On a Hybrid Fruit, By R.S.B.
On an Air Vessel. By J.T.R.
Also inquiries and answers from the following:
E.B.M.--F.F.F.--N.B.H.--B.B.--O.F.--R.V.J.--F.M.--N.B.C.--C.F.E.--W.T.
--C.W.C.--T.F.--C.A.S.--S.N.M.--J.R.D.--P.J.D.S.
* * * * *