the malay archipelago-1-第17章
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Edwardsiania； has a narrow pitcher twenty inches long； while the plant itself grows to a length of twenty feet。
Ferns are abundant； but are not so varied as on the volcanic mountains of Java； and Tree…ferns are neither so plentiful nor so large as on that island。 They grow； however； quite down to the level of the sea； and are generally slender and graceful plants from eight to fifteen feet high。 Without devoting much time to the search I collected fifty species of Ferns in Borneo； and I have no doubt a good botanist would have obtained twice the number。 The interesting group of Orchids is very abundant； but； as is generally the case； nine…tenths of the species have small and inconspicuous flowers。 Among the exceptions are the fine Coelogynes； whose large clusters of yellow flowers ornament the gloomiest forests； and that most extraordinary plant； Vanda Lowii； which last is particularly abundant near some hot springs at the foot of the Penin…jauh Mountain。 It grows on the lower branches of trees； and its us strange pendant flower…spires often hang down so as almost to reach the ground。 These are generally six or eight feet long； bearing large and handsome flowers three inches across； and varying in colour from orange to red； with deep purple…red spots。 I measured one spike； which reached the extraordinary length of nine feet eight inches； and bore thirty… six flowers； spirally arranged upon a slender thread…like stalk。 Specimens grown in our English hot…houses have produced flower… spires of equal length； and with a much larger number of blossoms。
Flowers were scarce； as is usual in equatorial forests； and it was only at rare intervals that I met with anything striking。 A few fine climbers were sometimes seen； especially a handsome crimson and yellow Aeschynanthus； and a fine leguminous plant with clusters of large Cassia…like flowers of a rich purple colour。 Once I found a number of small Anonaceous trees of the genus Polyalthea； producing a most striking effect in the gloomy forest shades。 They were about thirty feet high； and their slender trunks were covered with large star…like crimson flowers； which clustered over them like garlands； and resembled some artificial decoration more than a natural product。
The forests abound with gigantic trees with cylindrical； buttressed； or furrowed stems； while occasionally the traveller comes upon a wonderful fig…tree； whose trunk is itself a forest of stems and aerial roots。 Still more rarely are found trees which appear to have begun growing in mid…air； and from the same point send out wide…spreading branches above and a complicated pyramid of roots descending for seventy or eighty feet to the ground below； and so spreading on every side； that one can stand in the very centre with the trunk of the tree immediately overhead。 Trees of this character are found all over the Archipelago； and the accompanying illustration （taken from one which I often visited in the Aru Islands） will convey some idea of their general character。 I believe that they originate as parasites； from seeds carried by birds and dropped in the fork of some lofty tree。 Hence descend aerial roots； clasping and ultimately destroying the supporting tree； which is in time entirely replaced by the humble plant which was at first dependent upon it。 Thus we have an actual struggle for life in the vegetable kingdom； not less fatal to the vanquished than the struggles among animals which we can so much more easily observe and understand。 The advantage of quicker access to light and warmth and air； which is gained in one way by climbing plants； is here obtained by a forest tree； which has the means of starting in life at an elevation which others can only attain after many years of growth； and then only when the fall of some other tree has made room for then。 Thus it is that in the warm and moist and equable climate of the tropics； each available station is seized upon and becomes the means of developing new forms of life especially adapted to occupy it。
On reaching Sarawak early in December； I found there would not be an opportunity of returning to Singapore until the latter end of January。 I therefore accepted Sir James Brooke's invitation to spend a week with him and Mr。 St。 John at his cottage on Peninjauh。 This is a very steep pyramidal mountain of crystalline basaltic rock； about a thousand feet high； and covered with luxuriant forest。 There are three Dyak villages upon it； and on a little platform near the summit is the rude wooden lodge where the English Rajah was accustomed to go for relaxation and cool fresh air。 It is only twenty miles up the river； but the road up the mountain is a succession of ladders on the face of precipices； bamboo bridges over gullies and chasms； and slippery paths over rocks and tree…trunks and huge boulders as big as houses。 A cool spring under an overhanging rock just below the cottage furnished us with refreshing baths and delicious drinking water； and the Dyaks brought us daily heaped…up baskets of Mangosteens and Lansats； two of the most delicious of the subacid tropical fruits。 We returned to Sarawak for Christmas （the second I had spent with Sir James Brooke）； when all the Europeans both in the town and from the out…stations enjoyed the hospitality of the Rajah； who possessed in a pre…eminent degree the art of making every one around him comfortable and happy。
A few days afterwards I returned to the mountain with Charles and a Malay boy named Ali and stayed there three weeks for the purpose of making a collection of land…shells； butterflies and moths； ferns and orchids。 On the hill itself ferns were tolerably plentiful； and I made a collection of about forty species。 But what occupied me most was the great abundance of moths which on certain occasions I was able to capture。 As during the whole of my eight years' wanderings in the East I never found another spot where these insects were at all plentiful； it will be interesting to state the exact conditions under which I here obtained them。
On one side of the cottage there was a verandah； looking down the whole side of the mountain and to its summit on the right； all densely clothed with forest。 The boarded sides of the cottage were whitewashed； and the roof of the verandah was low； and also boarded and whitewashed。 As soon as it got dark I placed my lamp on a table against the wall； and with pins； insect…forceps； net； and collecting…boxes by my side； sat down with a book。 Sometimes during the whole evening only one solitary moth would visit me； while on other nights they would pour in； in a continual stream； keeping me hard at work catching and pinning till past midnight。 They came literally by the thousands。 These good nights were very few。 During the four weeks that I spent altogether on the hill I only had four really good nights； and these were always rainy； and the best of them soaking wet。 But wet nights were not always good； for a rainy moonlight night produced next to nothing。 All the chief tribes of moths were represented； and the beauty and variety of the species was very great。 On good nights I was able to capture from a hundred to two hundred and fifty moths； and these comprised on each occasion from half to two…thirds that number of distinct species。 Some of them would settle on the wall； some on the table； while many would fly up to the roof and give me a chase all over the verandah before I could secure them。 In order to show the curious connection between the state of weather and the degree in which moths were attracted to light； I add a list of my captures each night of my stay on the hill。
Date （1855） No。 of Moths Remarks Dec。 13th 1 Fine； starlight。 14th 75 Drizzly and fog。 15th 41 Showery； cloudy。 16th 158 （120 species。） Steady rain。 17th 82 Wet； rather moonlight。 18th 9 Fine； moonlight。 19th 2 Fine； clear moonlight。 31st 200 （130 species。） Dark and windy； heavy rain。
Date （1856） Jan。 1st 185 Very wet。 2d 68 Cloudy and showers。 3d 50 Cloudy。 4th 12 Fine。 5th 10 Fine。 6th 8 Very fine。 7th 8 Very fine。 8th 10 Fine。 9th 36 Showery。 10th 30 Showery。 11th 260 Heavy rain all night； and dark。 12th 56 Showery。 13th 44 Showery； some moonlight。 14th 4 Fine； moonlight。 15th 24 Rain； moonlight。 16th 6 Showers； moonlight。 17th 6 Showers； moonlight。 18th 1 Showers； moonlight。 Total 1；386
It thus appears that on twenty…six nights I collected 1；386 moths； but that more than 800 of them were collected on four very wet and dark nights。 My success here led me to hope that； by similar arrangements； I might on every island be able to obtain an abundance of these insects； but； strange to say； during the six succeeding years； I was never once able to make any collections at all approaching those at Sarawak。 The reason for this I can pretty well understand to be owing to the absence of some one or other essential condition that were here all combined。 Sometimes the dry season was the hindrance； more frequently residence in a town or village not close to virgin forest； and surrounded by other houses whose lights were a counter…attraction； still more frequently residence in a dark palm…thatched house； with a lofty roof； in whose recesses every moth was lost the instant it entered。 This last was the greatest drawback； and the real reason why I never again was able to make a collection of moths； for I never afterwards lived in a solitary jungle…house with a low boarded and whitewashed verandah； so constructed as to prevent insects at once escaping into the upper part of the house； quite out of reach。
After my long experience； my numerous failures； and my one success； I feel sure that if any party of naturalists ever make a yacht…voyage to explore the Malayan Archipelago； or any other tropical region； making entomology one of their chief pursuits； it would well repay them to carry a small framed verandah； or a verandah…shaped tent of white canvas； to set up in every favourable situation； as a means of making a collection of nocturnal Lepidoptera； and also of obtaining rare specimens of Coleoptera and other insects。 I make the suggestion here； because no one would suspect the enormous difference in results that such an apparatus would produce； and because I consider it one of the curiosities of a collector's experience； to have found out that some such apparatus is required。
When I returned to Singapore I took with me the Malay lad named Ali； who subsequently accompanied me all over the Archipelago。 Charles Allen preferred staying at the Mission…house； and afterwards obtained employment in Sarawak and in Singapore； until he again joined me
