 The observatory , officially " Her Majesty 's Magnetical and Meteorological Observatory at Toronto " , was completed the following year . It consisted of two log buildings , one for the magnetic instruments and the other a smaller semi @-@ buried building nearby for " experimental determinations " . The north end of the main building was connected to a small conical dome which contained a theodolite used to make astronomical measurements for the accurate determination of the local time . The buildings were constructed with as little metal as possible ; when metal was required , non @-@ magnetic materials such as brass or copper were used . A small barracks was built nearby to house the crew . 
 The observatory , officially " Her Majesty <a href='null_genetive' title='1'><mark>'s</mark></a>Magnetical and Meteorological Observatory at Toronto " , was completed the following year . It consisted of two log buildings , one for the magnetic instruments and the other a smaller semi @-@ buried building nearby for " experimental determinations " . The north end of the main building was connected to a small conical dome which contained a theodolite used to make astronomical measurements for the accurate determination of the local time . The buildings <a href='uninflect' title='2'><mark>were</mark></a> constructed with as little metal as possible ; when metal was required , non @-@ magnetic materials such as brass or copper <a href='uninflect' title='3'><mark>were</mark></a> used . A small barracks was built nearby to house the crew . 
The observatory , officially " Her Majesty  Magnetical and Meteorological Observatory at Toronto " , was completed the following year . It consisted of 2 log buildings , one for the magnetic instruments and the other a smaller semi @-@ buried building nearby for " experimental determinations " . The north end of da main building was connected to a small conical dome which contained a theodolite used to make astronomical measurements for tdaaccurate determination of the local time . The buildings was constructed with as lil metal as possible ; when metal was required , non @-@ magnetic materials such as brass or copper was used . A small barracks was built nearby to house the crew .