88 The Irish Naturalist. June 



the steep road north of Skerries leading from Sea Mount to the Hill, also 

 scattered thence for half a mile along the road to Milverton demesne, and 

 appearing again at Balcunnin and at a cross-roads near Skerries, 191 4. 



3. On the railway at the northern end of Donabate railway station, 19 14. 



4, Many hundreds of plants on the railway siding and in waste ground by 

 the Royal Canal, Cross Guns, in profusion by a cottage higher up the 

 canal, frequent at Liffey Junction, some dozens of plants at the Eighth 

 Lock and several hundreds thence at intervals for more than a mile by 

 Cabra road to Phibsborough, all in 191 5. 5, Widespread over the north 

 and east sides of Howth Head in 191 5 : e.g., fully 1,000 plants on the road 

 from the police barracks to the village, swarming in the school play- 

 ground at Ball of Glass, and many hundreds along the road thence to 

 Waldron's, at intervals along the road from Waldron's to the Hut, and 

 along the bye-road by Waverley Hotel, a few plants at the entrance to 

 Light-house Road, and scattered thence along the road to the Summit 

 tram station. A few plants by the roadside at Baldoyle and by the road 

 from Coolock to Raheny, with about fifty plants at Raheny village, all 

 in 1915. 7. In several stations by the Grand Canal in 1915 : e.g., By Canal 

 Harbour, Dolphin's Barn, by the Third Lock, and abundant by a cottage 

 between that and the Second Lock. Fully 100 plants by a new road 

 leading to Inchicore Brick-works, 191 5. Abundant in one spot by the 

 Tallaght road, near Green Hills, and sparingly near Drimnagh, and in a 

 gravel pit at Robin Hood, 19 16. A few plants in Chapelizod village and 

 about 100 on the Ballyfermot road, 19 15. In fair quantity round Mrs. 

 Healy's farm yard, Bohernabreena, 19 17. 8. A few plants on Victoria 

 Wharf, Kingstown, 19 10, and about fifty in the Harbour yard there, 19 12; 

 fully 100 plants on the Ballycorus road, and frequent by a cottage near 

 Bride's Glen ; about 200 plants on the main road, Loughlinstown, and 

 swarming round a cottage there, and by other cottages on the Commons, 

 1915. In Blackrock Park, 1917. 



This annual species now established in Ireland for a quarter of a century 

 is highly fertile in Co. Dublin, as it is no doubt throughout the island. A 

 well-grown plant bears about fifty fruiting heads, and an average of ten 

 of the.se gave 167 ovules per head, of which the perfect seeds averaged 

 133. It grows most vigorously on limestone drift soils. On some of the 

 higher bye-roads of Howth Head where quartzite comes to the surface the 

 plants become very stunted. 



Artemisia Absinthium, Linn. 



7. The chief Dublin station for the Wormwood has hitherto been in 

 the heart of the city on the extensive rubbish mounds left by the demo- 

 lition of tenement houses on the making of tlic new thoroughfare of Lord 

 Edward Street in 1886. A clearance made for a garden plot in 191 6 has 

 greatly reduced the plant in this station, where it was previously abundant, 

 and in the adjacent station of St. Nicholas' graveyard it has been quite 

 exterminated by the throwing down of the old wall in 1917. A new and 

 much wilder station, however, yielding fully fifty large plants and many 



