192 K.P.M. steamer Van Imhoff arrived and departed from Hollandia with Teerink, Toxopeus, etc. April 25th. Water rising steadily and several buildings on lower ground are flooded. Thunder- storms and heavy rain squalls about 5 in the afternoon have been a regular thing for several days. Went down the lagoon to beyond the narrows to collect Timonius 14043, which forms tall pure stands, on ground now 1 m. under water, near the river. April 26th. River rising steadily; floors of the European kitchen and all the houses quarter- ing natives under water. The Grumman made a flight from Tanah Merah to this camp, thence to Lake Sentani land-drome, on to Hollandia. and back to Tanah Merah. Some damage was sustained while landing at Hollandia, due to heavy rain. Pilot Van Dyck brought a request for the capella of the gold-mines Dyaks to return to Tanah Merah as all the Dyaks of Bartels exploration party at camp #48 have gone on strike and insist upon re- turning to Borneo. Perhaps the deaths of two of the on the 22nd (falling tree in camp) has something to do with it but I have also heard something about their contract having expired. April 27th. River rising slowly; unsettled weather continues. Most afternoons and every night we have rain and last night it was fairly continuous. The airplane crew being in a hurry to get to Sydney by the 15th May, we are ob- liged to return to Hollandia. two days earlier than was planned, viz. 9th and 10th of May. Guba left yesterday for Port Moresby; April 28th-30th. Steady rise in river has continued since at least 17th, the daily gain becoming