Reb Chaim explains the requirements for combining liquids, and differentiates that gathered liquids don't need to be combined, and also discusses the halachic definition of a liquid

Reb Chaim analyzes two debates between the Rambam and Raavad and shows how theyre interconnected, regarding what's considered attached to the ground to protect against Tumah

Reb Chaim analyzes the unusual halacha of how a carcass of a kosher bird creates impurity, with discussion of other commentators who disagree with his view (including Minchas Chinuch, R. Yosef Engel, Chazon Ish) and historical background on his rebbi, Reb Mendel Slutzker.

Reb Chaim explains the Rambam's approach when to apply the halacha that limbs of a Niddah or Zav don't give off Tumah, and defends his view against the Raavad.

Reb Chaim analyzes the halacha that someone who enters a house with Tzaraat is impure as well as their clothes, and explains how this works

Discussion of some of the Chazon Ish's broad conceptual debates with Reb Chaim on the topic of Tumat Met

Reb Chaim explains a debate between the Rambam and Raavad over Tumah traveling from the roof to the house, and connects it with their earlier debate regarding Tumah of a grave

Reb Chaim explains the differing approaches of the Rambam and Raavad to the halacha of Tumah in a wall or roof, specifically when the Tumah is squarely in the middle

Reb Chaim analyzes the protection of Tzamid Patil (anything in a sealed earthenware vessel is protected from Tumah) and explains how this protection is formulated.

Reb Chaim explains the debate between the Rambam and Raavad whether a tent blocks the Tumah from travelling outwards, and how it does so