Indeed:

Pp. 43-86 + Beilagen 7 & 8: https://books.google.de/books?id=KB6i85KKUQIC&hl=de&pg=RA1-PA43

Pp. 85—114: https://books.google.de/books?id=KB6i85KKUQIC&hl=de&pg=RA2-PA85

Pp. 113—221 + Beilagen 9 & 10: https://books.google.de/books?id=KB6i85KKUQIC&hl=de&pg=RA2-PA113

Note: The pages of the Beilagen are NOT numbered.

I have prepared a combined pdf file containing all three parts: "1850 Beihefte". Anyone wishing a copy, contact me by NSDF e-mail.

The "usual suspects" have already been sent copies.