Discusses effect of subsidence and elevation on deposits. Cites examples along coasts of South America and Wales. Proposes theory to explain thickness of deposits in south Wales.

Asks CL’s opinion of his theory of "craters of elevation" described in Volcanic islands.

Mentions CL’s comparison of Mississippi beds to the Pampas.

Comments on Poulett Scrope’s views on the separation of basalt and trachyte.

Describes his cirripede work.

Regarding their various points of view on a certain question.

JDH has received the books from his mother [Maria Sarah Hooker] & is delighted with the KEW ANNALS. His SOANE JOURNAL reads well. [Brian Houghton] Hodgson gave him the information about Jains. He is finding Turner’s TIBET interesting & will forward a copy from [Archibald] Campbell [AC]. The purses from Bessy [Elizabeth Hooker] et cetera are ready to be sent to their destinations; he sends his thanks to her & his grandmother & also Tom Brigbach, for the razors. JDH discusses a disagreement with the Choongtam Lama involving a Lepcha who he had employed as a hunter with the backing of the Singtam Soubah. He reported it to AC but expects no redress. JDH writes of the opposition he has faced from the Sikkim Rajah & the lack of support from AC, who has many political shortcomings. He sent seeds to [Hugh] Falconer yesterday & is pleased with Reeves’s subscription list for the RHODODENDRONS [OF THE SIKKIM-HIMALAYA]. He has called one Rhododendron 'Hodgsonia'. JDH has received a letter from Edgeworth who holds a Commissionership in the Punjab. Tayler is sending his portrait of JDH home; Fitch should copy it although Tayler will be angry. JDH asks his mother to send him a 'scribbling diary' & 'Nautical Almanac'. He details the money he has drawn. Thomson writes in good health. JDH writes of his collections & asks if they are growing at RBG Kew. He is sending many more pines & Rhododendrons for Kew via Darjeeling. He discusses Madden’s paper & the phenomenon of plants flowering earlier at higher elevations & requests an actinometer to measure solar radiation.