.AprIl X'th 1918

Y&D:    1st Lietat. Uichael fIei4elbeqpr, ?%n. Corps.

To :   The %rgeon General of the Amy.

subject:  Monthly Persons1 Rsport.

ril 1st to[A~r~--~l918, re-
r, RockePI)l?er Institute for


       imediately engaged

that they may

for bactericidal and tbezxpeutio power by Dr. Vollstein
of this Tnatitut-? .

  SIickurel Haidelberger
1st Lieut@,, Sm. Corps, U.S.N.I.